Moldex SparkPlugs® Disposable Uncorded Earplugs 6604 | SLC₈₀ 29dB Class 5 | Box of 200 Pairs

Extra-Soft Foam Hearing Protection for Mining, Construction, Manufacturing and High-Noise Industrial Workplaces

Supply Solutions Group supplies Moldex SparkPlugs® Disposable Uncorded Earplugs – 6604 – Class 5 – Box of 200 Pairs for mining, construction, manufacturing, engineering, utilities, transport, fabrication and general industrial workplaces throughout Australia.

The Moldex SparkPlugs 6604 are disposable uncorded foam earplugs manufactured from extra-soft, low-pressure foam for comfortable extended wear. Their tapered shape is designed for easy insertion and removal, while the smooth surface helps provide a secure, non-irritating fit across a wide range of ear canals. (Moldex)

For Australia and New Zealand, Moldex specifies:

SLC₈₀ 29dB – Class 5

with testing to:

AS/NZS 1270:2002. (Moldex)

When selected, used and maintained according to AS/NZS 1269.3, Moldex states the protector may be used in noise levels up to 110dB(A), assuming an 85dB(A) criterion. (Moldex)

Each box contains:

200 Pairs

and the manufacturer case contains:

10 Boxes × 200 Pairs = 2,000 Pairs. (Moldex)

This listing contains:

1 Box × 200 Pairs Moldex SparkPlugs® Uncorded Disposable Earplugs – 6604

As an Indigenous-owned industrial and workplace supplier, Supply Solutions Group provides Moldex hearing protection, disposable respirators, safety eyewear, PPE and industrial consumables backed by responsive customer service, procurement support and Australia-wide business supply capability.

Product Type

• Product Type: Disposable Foam Earplugs

• Brand: Moldex

• Range: SparkPlugs®

• Product Number: 6604

• Style: Uncorded

• Material: Extra-Soft Foam

• Shape: Tapered

• Australian Rating: SLC₈₀ 29dB

• Hearing Protection Class: Class 5

• Standard: AS/NZS 1270:2002

• Maximum Nominal Noise Environment: Up to 110dB(A), subject to correct selection

• US NRR: 33dB

• PVC Free: Yes

• Country of Origin: USA

• Shelf Life: 5 Years

• Pairs per Box: 200

• Boxes per Case: 10

• Pairs per Full Case: 2,000

Key Features

• Genuine Moldex hearing protection

• SparkPlugs® range

• Product number 6604

• Uncorded disposable design

• Extra-soft, low-pressure foam

• Smooth, non-irritating surface

• Tapered shape

• Suitable for smaller ear canals

• Distinctive coloured streaks and swirls

• Class 5 hearing protection

• SLC₈₀ 29dB

• Tested to AS/NZS 1270:2002

• Suitable for noise levels up to 110dB(A) when correctly selected

• NRR 33dB under US testing

• 100% PVC-free product and packaging

• Made in USA

• Five-year manufacturer shelf life

• 200 pairs per box

• 2,000 pairs per full case

• Suitable for mining

• Suitable for construction

• Suitable for manufacturing

• Suitable for transport

• Suitable for utilities

• Suitable for general industrial use

Technical Specifications

Specification	Details
Brand	Moldex
Range	SparkPlugs®
Product Number	6604
Product Type	Disposable Foam Earplug
Style	Uncorded
Foam Type	Extra-Soft, Low Pressure
Shape	Tapered
Australian Rating	SLC₈₀ 29dB
Australian Class	Class 5
Standard	AS/NZS 1270:2002
Nominal Noise Level	Up to 110dB(A)*
US NRR	33dB
PVC Free	Yes
Country of Origin	USA
Shelf Life	5 Years
Quantity per Box	200 Pairs
Boxes per Case	10
Total per Case	2,000 Pairs

*Subject to correct selection, fitting, use and maintenance under the applicable workplace hearing-protection program. Moldex's Australian attenuation sheet specifically lists SLC₈₀ 29dB Class 5 and notes suitability up to 110dB(A) under the stated criterion. (Moldex)

Typical Applications

• Machine operation

• Grinding

• Cutting

• Fabrication

• Welding environments

• Construction

• Mining

• General manufacturing

• Maintenance

• Plant operation

• Oil and gas

• Utilities

• Automotive workshops

• Transport operations

• Heavy industrial workplaces

• Pharmaceutical manufacturing

• Agriculture

Moldex currently lists industries including agriculture, automotive, construction, energy and utilities, general manufacturing, mining, oil and gas, pharmaceutical and transportation. (Moldex)

Suitable Industries

• Mining and resources

• Construction

• Manufacturing

• Engineering

• Automotive

• Welding and fabrication

• Energy and utilities

• Oil and gas

• Transport

• Agriculture

• Pharmaceutical

• Industrial maintenance

• Infrastructure

• Warehousing and logistics

Why Choose Moldex SparkPlugs 6604?

The SparkPlugs 6604 combine:

Class 5 Protection + Extra-Soft Foam + High Attenuation + Bulk Workplace Packaging

for workers operating in demanding noise environments.

Moldex highlights the earplug's low-pressure foam and smooth surface as important comfort features, while the tapered shape supports easier insertion and fit. (Moldex)

SLC₈₀ 29dB – Class 5

For Australia and New Zealand, Moldex specifies:

SLC₈₀ 29dB – Class 5. (Moldex)

Class 5 is the highest classification in the Australian SLC₈₀ system.

The correct hearing protector should still be selected according to measured workplace noise levels rather than simply choosing the highest available class.

AS/NZS 1270:2002

Moldex states that the 6604 meets:

AS/NZS 1270:2002 – Acoustics – Hearing Protectors. (Moldex)

The Australian attenuation data was tested according to AS/NZS 1270 by Challis & Associates. (Moldex)

Suitable for Noise Levels up to 110dB(A)

Moldex's Australian data states that a Class 5 protector may be used in noise up to:

110dB(A)

when selected, used and maintained as specified in AS/NZS 1269.3 and assuming an 85dB(A) criterion. (Moldex)

A lower workplace criterion may require a different selection approach.

Extra-Soft, Low-Pressure Foam

SparkPlugs are manufactured from:

Extra-Soft, Low-Pressure Foam. (Moldex)

The foam is designed to create a secure seal while limiting pressure against the ear canal, supporting comfort during longer periods of wear.

Tapered Shape

The 6604 features a:

Tapered Shape

for straightforward insertion and removal. Moldex also notes that the design is intended to fit even relatively small ear canals. (Moldex)

Smooth Surface

Moldex describes the earplugs as having a:

Smooth, Non-Irritating Surface

to help support all-day wearability. (Moldex)

Individual fit varies, so workers should use the hearing protector that provides a secure and comfortable seal for their ears.

Distinctive SparkPlugs Appearance

SparkPlugs use Moldex's distinctive:

Coloured Streaks and Swirls

which provide immediate visual identification of the range. (Moldex)

NRR 33dB

Under the US ANSI test method, the Moldex 6604 carries:

NRR 33dB. (Moldex)

For Australian workplace selection, however, the relevant specification is generally the SLC₈₀ 29dB Class 5 rating rather than the US NRR.

PVC-Free

Moldex states that SparkPlugs and their packaging are:

100% PVC Free. (Moldex)

This forms part of Moldex's product sustainability approach.

Made in USA

Moldex lists the:

Country of Origin: USA

and states that its disposable earplugs are manufactured in America. (Moldex)

Five-Year Shelf Life

The manufacturer currently lists:

Shelf Life: 5 Years. (Moldex)

Storage conditions and packaging integrity should be maintained according to manufacturer guidance.

Disposable Design

The SparkPlugs 6604 are designed as disposable hearing protection.

Disposable foam earplugs are particularly practical for:

• Employee issue

• Contractor PPE kits

• Visitor protection

• PPE vending systems

• Site stores

• Workshop stock

• Frequent replacement programs

Correct Fitting Is Essential

The protection achieved by foam earplugs depends heavily on correct fitting.

A poorly fitted Class 5 plug can provide substantially less attenuation than its laboratory rating.

Workers should be trained to:

• Roll the foam correctly

• Straighten the ear canal

• Insert the plug sufficiently

• Hold it while the foam expands

• Check the resulting fit

General Foam Earplug Fitting Method

Always follow the Moldex instructions supplied with the product. A typical foam-earplug fitting process involves:

1. Roll and compress the plug into a narrow cylinder.

2. Reach over the head and pull the ear upward and outward.

3. Insert the compressed plug into the ear canal.

4. Hold it in position while the foam expands.

5. Check the fit before entering the noise zone.

Compatibility with Other PPE

Uncorded foam earplugs can be worn alongside appropriate:

• Hard hats

• Safety glasses

• Face shields

• Welding helmets

• Respirators

• Protective clothing

All PPE should be checked together to ensure one item does not compromise another.

Box of 200 Pairs

Each box contains:

200 Pairs. (Moldex)

The bulk box is suitable for:

• Mine-site PPE stores

• Construction projects

• Manufacturing plants

• Workshop PPE stations

• Contractor induction areas

• Maintenance departments

Full Case Quantity

Moldex packs:

10 Boxes per Case

providing:

2,000 Pairs per Full Case. (Moldex)

Related Moldex SparkPlugs Products

The current SparkPlugs range also includes:

• 6654 – Corded SparkPlugs, 100 pairs per box

• 6615 – Corded Metal Detectable SparkPlugs, 100 pairs per box

• 6644 – Uncorded PlugStation, 250 pairs

• 6645 – Uncorded PlugStation, 500 pairs. (Moldex)

Storage & Handling

For best product condition:

• Store unused earplugs in a clean, dry location

• Protect from contamination

• Keep original packaging intact until required

• Use clean hands during fitting

• Avoid contact with oils or chemicals

• Replace dirty or damaged plugs

• Observe the manufacturer shelf life

Why Buy from Supply Solutions Group?

Supply Solutions Group supplies Moldex hearing protection, PPE and industrial consumables to organisations throughout Australia.

Benefits of Partnering with Supply Solutions Group

• Australia-wide business supply capability

• Indigenous-owned business

• Moldex hearing protection

• SparkPlugs disposable earplugs

• Class 5 hearing protection

• Uncorded earplugs

• Corded earplugs

• Metal-detectable earplugs

• Earmuffs

• Respiratory protection

• Disposable respirators

• Safety glasses

• Safety goggles

• Face protection

• Hard hats

• Protective gloves

• Protective clothing

• Safety footwear

• Mining consumables

• Construction supplies

• Manufacturing supplies

• Industrial consumables

• Procurement consolidation

• Trade account options

• Bulk purchasing solutions

• Product sourcing assistance

• Responsive customer service

• Recurring commercial supply arrangements

Frequently Asked Questions

What are Moldex SparkPlugs 6604?
They are disposable uncorded extra-soft foam earplugs designed for occupational hearing protection. (Moldex)

What is the product number?
6604.

Are they corded?
No. The 6604 is the uncorded SparkPlugs model. (Moldex)

What is the Australian hearing-protection rating?
SLC₈₀ 29dB – Class 5. (Moldex)

What Australian standard do they meet?
AS/NZS 1270:2002. (Moldex)

Are they suitable for noise up to 110dB(A)?
Moldex states that the Class 5 protector may be used in noise up to 110dB(A) when selected, used and maintained in accordance with AS/NZS 1269.3 under the stated criterion. (Moldex)

What is the US NRR rating?
33dB. (Moldex)

How many pairs are supplied per box?
200 pairs. (Moldex)

How many boxes are in a full case?
10 boxes. (Moldex)

How many pairs are in a full case?
2,000 pairs.

What are the plugs made from?
They use extra-soft, low-pressure foam. (Moldex)

Are they tapered?
Yes. The tapered design is intended to make fitting and removal easier. (Moldex)

Are they suitable for smaller ear canals?
Moldex states that their design is intended to fit even small ear canals. (Moldex)

Are they PVC free?
Yes. Moldex states that the product and packaging are 100% PVC free. (Moldex)

Where are they manufactured?
Moldex lists the country of origin as the USA. (Moldex)

What is the shelf life?
5 years. (Moldex)

Are they suitable for mining?
Yes. Mining is one of the industries specifically listed by Moldex. (Moldex)

Are they suitable for construction?
Yes. Construction is also specifically listed. (Moldex)

Can Supply Solutions Group provide the corded version?
Yes. The related Moldex 6654 SparkPlugs are the corded version and are supplied in 100-pair boxes. (Moldex)

Can Supply Solutions Group provide bulk or recurring quantities?
Yes. Bulk and recurring supply arrangements are available for mine sites, construction businesses, manufacturers, workshops, utilities, transport operators and other commercial organisations.