3M E-A-R UltraFit 340-4004 Corded Reusable Earplugs (SNR 32 dB)

The 3M UltraFit 340-4004 are genuine corded, reusable earplugs that deliver an SNR of 32 dB. Their pre-moulded triple-flange design seals comfortably without rolling down, and the cord keeps the plugs together when not in use, so they suit noisy manufacturing and construction environments.

Product overview

The E-A-R UltraFit is a washable, reusable earplug for repeated daily use. Because the soft triple-flange tip is pre-moulded, workers can insert it quickly and hygienically without rolling foam. The attached cord lets the plugs hang around the neck during breaks, reducing loss, and they can be washed and reused to lower cost over time.

Key features and benefits

• SNR 32 dB: strong noise attenuation for loud environments.
• Reusable & washable: lower cost per use than disposable foam.
• Triple-flange fit: comfortable seal without rolling foam.
• Corded: plugs stay together and are easy to keep at hand.
• Hygienic insertion: no need to roll the tip before fitting.

Main industries and applications

• Manufacturing & production: ongoing machine noise.
• Construction & demolition: loud site work.
• Metalworking & engineering: grinding and machining.
• Maintenance: intermittent high-noise tasks.

Technical specifications

Why buy from Techmaster Electronics

Techmaster Electronics is an authorised supplier of 3M personal protective equipment in Vietnam. We supply genuine 3M hearing protection, advise on the right attenuation for your noise levels, and provide dependable after-sales support. Contact Techmaster for a free consultation and a quotation.

Frequently asked questions

What noise level do the UltraFit 340-4004 reduce?

They provide an SNR of 32 dB. Always match the attenuation to the measured noise level in your workplace.

Are they reusable?

Yes. The triple-flange earplugs are washable and reusable, which lowers the cost per use compared with disposable foam.

What is the cord for?

The cord keeps the two plugs together and lets them hang around the neck during breaks, reducing loss.

How are they different from the 340-4002?

The 340-4004 is the corded version, while the 340-4002 is the uncorded version of the same UltraFit earplug.