LOCTITE® SI 587 Blue Maxx RTV Silicone Gasket Sealant | 95g | 587-95 | High Temperature Oil Resistant

Metallic Blue Flexible RTV Silicone Gasket Maker for Automotive, Industrial, Flange and Maintenance Sealing Applications

Supply Solutions Group supplies LOCTITE® SI 587 Blue Maxx – 95g (Product Reference 587-95) to organisations operating across automotive, manufacturing, engineering, mining, transport, heavy equipment, industrial maintenance and mechanical workshops throughout Australia.

LOCTITE SI 587, commonly known as LOCTITE 587 Blue Maxx, is a professional one-component RTV silicone gasket sealant designed for general-purpose gasketing and sealing applications.

The metallic-blue silicone paste cures at room temperature to form a tough yet flexible rubber gasket, allowing the product to conform to mating surfaces while providing reliable sealing performance.

LOCTITE 587 is particularly suited to applications requiring resistance to automotive and industrial engine oils, making it useful across workshops, plant maintenance, mechanical servicing and OEM assembly environments.

The product can be used as a form-in-place gasket, allowing technicians to create a flexible sealing layer directly between compatible mating surfaces.

It can also be used for gasket replacement or gasket dressing, providing versatility during repair and maintenance work.

The cured silicone retains flexibility, helping the seal accommodate movement, vibration, thermal expansion and mechanical shock within appropriate assemblies.

Henkel states that LOCTITE SI 587 enhances the load-bearing and shock-absorbing characteristics of the bond area, providing additional resilience in demanding mechanical sealing applications.

The formulation is thixotropic, helping reduce migration or running of the uncured product after it has been applied.

This improves application control on vertical, angled and irregular sealing surfaces.

LOCTITE SI 587 uses oxime silicone chemistry and cures through room-temperature vulcanisation, commonly referred to as RTV cure.

No mixing is required because it is supplied as a single-component product.

Henkel specifies LOCTITE SI 587 for demanding applications at temperatures up to approximately 260°C (500°F).

This high-temperature capability makes it suitable for appropriate automotive and industrial sealing applications where conventional low-temperature sealants may not provide sufficient performance.

Typical applications include suitable flanges, covers, housings, mechanical assemblies and gasketed joints exposed to oil, temperature changes and vibration.

The convenient 95g format provides a practical quantity for mechanical workshops, maintenance personnel and businesses carrying out regular gasket replacement and repair work.

This listing contains 1 × 95g LOCTITE SI 587 Blue Maxx Silicone Gasket Sealant, Product Reference 587-95.

As an Indigenous-owned industrial supplier and procurement partner, Supply Solutions Group provides LOCTITE gasket sealants, adhesives, threadlockers, retaining compounds, thread sealants, anti-seize lubricants and industrial maintenance products backed by responsive customer service, procurement support and Australia-wide business supply capability.

Product Type

• Product Type: RTV Silicone Gasket Sealant

• Brand: LOCTITE®

• Manufacturer: Henkel

• Product: LOCTITE SI 587

• Common Name: LOCTITE 587 / Blue Maxx

• Product Reference: 587-95

• Pack Size: 95g

• Technology: Silicone

• Chemical Type: Oxime Silicone

• Components: One Component

• Cure Type: Room Temperature Vulcanising (RTV)

• Physical Form: Paste

• Colour: Metallic Blue

• Thixotropic: Yes

• Specific Gravity: Approx. 1.28–1.33

• Oil Resistance: Automotive & Industrial Engine Oils

• Maximum Application Temperature: Up to 260°C

• Primary Application: Gasketing & Sealing

• Gasket Replacement: Yes

• Gasket Dressing: Yes

Key Features

• Genuine LOCTITE® industrial gasket sealant

• LOCTITE SI 587

• Commonly known as LOCTITE 587 Blue Maxx

• 95g pack

• Product Reference 587-95

• General-purpose silicone gasket sealant

• Metallic-blue silicone paste

• One-component formulation

• No mixing required

• RTV room-temperature cure

• Oxime silicone chemistry

• Forms a tough flexible rubber gasket

• Flexible after cure

• Excellent oil-resistant sealing characteristics

• Resistant to automotive engine oils

• Resistant to industrial engine oils

• Suitable for gasket replacement

• Suitable for gasket dressing

• Suitable for form-in-place gasket applications

• Thixotropic formulation

• Helps reduce product migration after application

• Suitable for manual application

• Suitable for controlled dispensing applications

• Enhances load-bearing characteristics

• Enhances shock-absorbing characteristics

• Helps accommodate vibration

• Suitable for demanding mechanical applications

• High-temperature performance

• Suitable for applications up to 260°C

• Suitable for plant maintenance

• Suitable for automotive servicing

• Suitable for industrial manufacturing

• Suitable for fluid-processing environments

• Suitable for fluid-power applications

Technical Specifications

Specification Details
Brand	LOCTITE®
Manufacturer	Henkel
Product	SI 587
Common Product Name	LOCTITE 587 / Blue Maxx
Product Type	RTV Silicone Gasket Sealant
Product Reference	587-95
Pack Size	95g
Technology	Silicone
Chemical Type	Oxime Silicone
Components	One Component
Mixing Required	No
Cure	Room Temperature Vulcanising (RTV)
Appearance – Uncured	Metallic Blue Paste
Physical Form	Paste
Thixotropic	Yes
Specific Gravity @ 25°C	Approx. 1.28–1.33
Tack-Free Time @ 25°C / 50% RH	Approx. 10–50 Minutes
Oil Resistance	Automotive & Industrial Engine Oils
Maximum Application Temperature	Up to 260°C / 500°F
Primary Application	Gasketing & Sealing
Gasket Replacement	Yes
Gasket Dressing	Yes
Form-In-Place Gasket	Yes
Storage Temperature	Approx. 8°C to 21°C

Typical Applications

• Form-in-place gaskets

• Gasket replacement

• Gasket dressing

• Flange sealing

• Mechanical covers

• Equipment housings

• Engine-related sealing

• Automotive servicing

• Industrial machinery

• Mechanical assemblies

• Oil-resistant sealing

• Plant maintenance

• Equipment repairs

• Preventative maintenance

• Fluid-processing equipment

• Fluid-power equipment

• Manufacturing assembly

• Workshop repairs

• Heavy equipment maintenance

• General mechanical sealing

Suitable Industries

• Automotive

• Automotive aftermarket

• Manufacturing

• Engineering

• Mining and resources

• Heavy equipment

• Transport and logistics

• Industrial maintenance

• Mechanical workshops

• Plant maintenance

• Fluid processing

• Fluid power

• Equipment manufacturing

• Machinery servicing

• Construction equipment

• Agriculture

• Infrastructure

• Utilities

• Maintenance and repair

• Trades and contracting

Why Choose LOCTITE® SI 587 Blue Maxx?

LOCTITE SI 587 provides a flexible alternative to conventional pre-cut gaskets for appropriate flange and mechanical sealing applications.

Traditional gasket materials need to match the geometry of the mating surfaces.

LOCTITE SI 587 is applied directly to the assembly as a paste, allowing the silicone to conform to irregularities and create a form-in-place gasket.

As the product cures, it forms a tough yet flexible rubber seal.

This flexibility is particularly useful in assemblies exposed to:

• Vibration

• Mechanical shock

• Thermal expansion

• Temperature cycling

• Minor movement between mating surfaces

Henkel specifically states that the cured product helps enhance the load-bearing and shock-absorbing characteristics of the bond area.

Designed for Oil-Exposed Assemblies

LOCTITE SI 587 has been designed to provide excellent sealing performance against industrial and automotive engine oils.

Oil resistance is particularly important in mechanical equipment where gasketed joints are exposed to lubricants during normal operation.

Suitable applications may include appropriate:

• Engine-related assemblies

• Machinery housings

• Covers

• Flanges

• Oil-exposed mechanical joints

• Industrial equipment

Always confirm suitability against the particular oil, operating temperature and equipment manufacturer's requirements.

High-Temperature Performance

Henkel specifies LOCTITE SI 587 for demanding applications at temperatures up to approximately:

260°C / 500°F

This makes it suitable for appropriate sealing applications where components experience significant heat.

Actual service suitability depends on factors including:

• Continuous operating temperature

• Peak temperature

• Joint design

• Substrate

• Chemical exposure

• Mechanical loading

• Equipment-manufacturer requirements

Thixotropic Formula

LOCTITE SI 587 has a thixotropic consistency.

This means the uncured paste is designed to resist excessive running or migration after application.

Benefits include:

• Improved application control

• Easier use on vertical surfaces

• Reduced dripping

• Better positioning on flanges

• More controlled gasket-bead application

• Suitability for manual and automated dispensing

One-Part RTV Silicone

LOCTITE SI 587 is supplied as a single-component silicone sealant.

No separate catalyst or hardener needs to be mixed before application.

The product cures through room-temperature vulcanisation (RTV) after exposure to atmospheric moisture.

This makes it convenient for workshops and maintenance operations because preparation is straightforward.

Typical Cure Characteristics

The current Henkel Technical Data Sheet identifies a typical tack-free time of approximately 10 to 50 minutes at 25°C and 50% relative humidity.

Actual cure rate depends on:

• Temperature

• Humidity

• Bead thickness

• Joint geometry

• Air exposure

RTV silicone cures progressively from the outside surface inward.

Thicker sections therefore require additional time to develop full cure.

Do not place assemblies into demanding service until adequate cure has developed for the particular application.

Gasket Replacement

LOCTITE SI 587 can be used as a form-in-place gasket replacement on suitable assemblies.

Potential benefits include:

• Conforms to irregular surface geometry

• Eliminates the need for some pre-cut gasket shapes

• Flexible cured seal

• Good oil resistance

• Suitable for complex flange profiles

• Convenient workshop application

Always confirm that the equipment manufacturer permits RTV silicone gasket replacement for the specific joint.

Gasket Dressing

LOCTITE SI 587 can also be used as a gasket dressing where appropriate.

In these applications, the silicone is used together with a compatible conventional gasket to help improve sealing.

Compatibility with the existing gasket material and equipment manufacturer's requirements should always be confirmed before use.

General Application Guidance

For appropriate gasket-making applications:

1. Remove old gasket material where required.

2. Clean mating surfaces thoroughly.

3. Remove excessive oil, grease and contamination.

4. Ensure surfaces are appropriately dry.

5. Apply a continuous bead of LOCTITE SI 587 to the required sealing surface.

6. Surround bolt holes appropriately where specified.

7. Assemble components according to the equipment manufacturer's instructions.

8. Tighten fasteners according to the specified sequence and torque.

9. Allow sufficient cure before placing the assembly into demanding service.

Always refer to Henkel's current Technical Data Sheet and the equipment manufacturer's service procedure.

Surface Preparation

Successful gasket sealing depends heavily on surface preparation.

Before applying LOCTITE SI 587:

• Remove old sealant

• Remove loose gasket material

• Remove dirt and contamination

• Remove excessive grease and oil

• Clean the mating flange surfaces appropriately

• Ensure surfaces are compatible with silicone sealant

• Follow equipment-manufacturer recommendations

Avoid damaging machined flange surfaces during old-gasket removal.

Important Application Considerations

LOCTITE SI 587 should not automatically be used as a replacement for every conventional gasket.

Always check:

• Equipment manufacturer requirements

• Flange design

• Required gasket thickness

• Fluid compatibility

• Temperature

• Pressure

• Service environment

Some precision joints and specialised assemblies require specific gasket materials or other LOCTITE gasketing technologies.

Storage

Henkel's current product information specifies a storage temperature range of approximately:

8°C to 21°C

For best product condition:

• Store in the original unopened container

• Keep in a dry location

• Keep the container properly sealed

• Avoid excessive temperature exposure

• Prevent contamination of unused product

• Follow the expiry and storage instructions printed on the package

Important Safety Information

LOCTITE SI 587 is an industrial silicone sealant and should be handled according to the current Henkel Safety Data Sheet.

Users should:

• Read the product label and current SDS before use

• Use appropriate workplace ventilation

• Avoid unnecessary skin contact

• Avoid eye contact

• Wear PPE specified by the SDS and workplace risk assessment

• Wash hands after handling

• Keep the container closed when not in use

• Store according to Henkel requirements

• Dispose of unused product and packaging appropriately

For professional workshop and industrial applications, always incorporate the product into established chemical-handling and maintenance procedures.

Why Buy from Supply Solutions Group?

Supply Solutions Group is an Indigenous-owned Australian supplier of industrial adhesives, gasket sealants, threadlockers, retaining compounds, lubricants and maintenance consumables, providing LOCTITE products backed by procurement support and Australia-wide business supply capability.

Benefits of Partnering with Supply Solutions Group

• Australia-wide business supply capability

• Indigenous-owned and operated business

• Genuine LOCTITE product supply

• Henkel industrial products

• RTV silicone gasket sealants

• Form-in-place gasket products

• Automotive maintenance consumables

• Industrial sealing products

• Engineering adhesives

• Mining maintenance products

• Manufacturing consumables

• Mechanical workshop products

• Threadlockers

• Retaining compounds

• Thread sealants

• Anti-seize lubricants

• Procurement support services

• Trade account options

• Bulk purchasing solutions

• Product sourcing assistance

• Responsive customer service

• Ongoing commercial supply arrangements

Frequently Asked Questions

What is LOCTITE 587 Blue Maxx?
LOCTITE 587 Blue Maxx is the commonly recognised name for LOCTITE SI 587, a metallic-blue one-component RTV silicone gasket sealant.

How much product is included?
This listing contains 1 × 95g pack of LOCTITE 587 Blue Maxx.

What is the product reference?
The supplied product reference is 587-95.

Is 95g an official LOCTITE SI 587 pack size?
Yes. Henkel's current product catalogue includes 95g among the available SI 587 pack sizes.

What colour is LOCTITE SI 587?
The uncured sealant is metallic blue.

What type of sealant is LOCTITE 587?
It is a one-component oxime silicone RTV gasket sealant.

Does LOCTITE 587 require mixing?
No. It is supplied as a single-component product.

How does LOCTITE 587 cure?
It cures through room-temperature vulcanisation (RTV) using atmospheric moisture.

Does LOCTITE 587 remain flexible?
Yes. Once cured, the product forms a tough yet flexible rubber gasket.

Can LOCTITE 587 replace a gasket?
Yes. Henkel specifically identifies SI 587 for form-in-place gasket replacement applications where suitable.

Can it be used as a gasket dressing?
Yes. Henkel also specifies LOCTITE SI 587 for gasket dressing applications.

Is LOCTITE 587 oil resistant?
Yes. It is designed to provide strong sealing performance against industrial and automotive engine oils.

Is LOCTITE 587 suitable for automotive applications?
Yes. Automotive and automotive aftermarket are among Henkel's identified market segments for SI 587.

Can it be used for industrial maintenance?
Yes. Plant maintenance and industrial manufacturing are important applications for LOCTITE SI 587.

What temperature can LOCTITE 587 withstand?
Henkel specifies use in demanding applications up to approximately 260°C / 500°F.

Is LOCTITE 587 thixotropic?
Yes. Its thixotropic nature helps reduce migration of uncured product after application.

What is the specific gravity?
Henkel's current TDS lists a typical specific gravity range of approximately 1.28 to 1.33 at 25°C.

How long does it take to become tack free?
The TDS lists a typical tack-free time of approximately 10 to 50 minutes at 25°C and 50% relative humidity.

Does tack-free mean fully cured?
No. Tack-free time only indicates when the exposed surface stops feeling tacky. Full cure through the complete silicone bead takes longer and depends on bead thickness, humidity and temperature.

Does LOCTITE 587 help absorb shock?
Yes. Henkel states that SI 587 enhances the load-bearing and shock-absorbing characteristics of the bond area.

Can it be used on engine assemblies?
It can be used on appropriate engine-related gasket and sealing applications where RTV silicone is approved by the equipment manufacturer.

Can it be used on flanges?
Yes. Form-in-place sealing of suitable flange assemblies is a common application for RTV gasket sealants such as LOCTITE SI 587.

Should old gasket material be removed first?
Old gasket and sealant material should generally be removed and the mating surfaces properly prepared according to Henkel and equipment-manufacturer instructions.

How should LOCTITE 587 be stored?
Henkel currently specifies a storage range of approximately 8°C to 21°C.

Can Supply Solutions Group provide larger quantities?
Yes. Bulk and ongoing supply arrangements are available for automotive workshops, manufacturers, engineering companies, mine sites, fleet-maintenance operations and other commercial customers.

Can Supply Solutions Group supply other LOCTITE gasket products?
Yes. Supply Solutions Group can assist with broader requirements for LOCTITE SI 587 and other LOCTITE RTV silicone, flange sealants, gasket makers, threadlockers, thread sealants and retaining compounds, subject to availability.