Product Information

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Color

Yellow/White

Honeywell Bilsom 303 yellow and white striped bullet shape foam earplugs

Honeywell Bilsom 303 Ear Plugs

KTI15007001HEP303

Product Description

The Honeywell Bilsom 303 is an industrial single-use polyurethane foam earplug engineered for high-attenuation hearing protection across medium to high noise environments.

Make/Brand: Honeywell
Model: Bilsom 303
Noise Attenuation Rating: SNR 33 dB; SLC80 22 dB (Class 4 uncorded)
Material: Patented low-pressure polyurethane foam
Shape / Profile: Tapered bullet shape
Colour: Yellow and white Leight Stripe pattern
Skin Type: Smooth, soil-resistant outer skin to inhibit dirt build-up
Dispenser Compatibility: Compatible with Honeywell Leight Source 100, 400, and 500 bulk dispensers
Standards Compliance: EN 352-2:2002, AS/NZS 1270:2002, Council Directive 89/686/EEC Category II

KTI15007001HEP303

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Product Details
Available Brands	Honeywell
Unit	Numbers
HSN Code	40169970
Warranty	Not Applicable
Resources	Download Datasheet
Tags/categories	Safety PPE Personal Protective Equipment Ear Muff

Usually dispatched within 2 days

About this product .

The Honeywell Bilsom 303 single-use earplug delivers occupational hearing conservation through specialized polyurethane foam formulation. Engineered to exert minimal radial expansion pressure against the ear canal lining, the low-pressure foam gently expands to eliminate ear canal irritation and fatigue during extended full-shift wear.
Acoustic attenuation performance is certified to an SNR of 33 dB under European standards and an SLC80 rating of 22 dB (Class 4) under Australian/New Zealand criteria. This high attenuation profile effectively suppresses dangerous decibel exposures in demanding industrial settings while retaining vocal frequency recognition necessary for worker communication.
Featuring an ergonomic tapered bullet geometry, the earplug rolls down swiftly into a crease-free cylinder for intuitive canal insertion. The distinctive yellow and white Leight Stripe visual pattern aids safety supervisors in conducting immediate, distance-based compliance checks across shop floors and job sites.
The earplug surface is treated with a smooth, soil-resistant exterior skin that impedes the adhesion of grease, dust, and particulate contaminants during handling. This non-porous exterior helps maintain auditory hygiene and minimizes the transfer of foreign debris into the ear canal during repetitive daily fitments.
Certified under European Standard EN 352-2:2002 and European Council Directive 89/686/EEC as Category II Personal Protective Equipment, the Bilsom 303 also holds AS/NZS 1270:2002 approval under Standardsmark License #1579. Manufacturing complies with ISO 9001:2008 quality management controls.
Recommended for noise-intensive sectors including manufacturing, construction, chemical processing, pharmaceutical production, transportation, and municipal operations. The earplugs can be deployed individually or paired with Honeywell Leight Source 100, 400, and 500 bulk dispensers for economical facility-wide distribution.
Proper fitment requires clean hands rolling the plug into a narrow cylinder, straightening the ear canal by pulling the outer ear up and back, and allowing 30 to 40 seconds for full expansion. As disposable personal protective equipment, plugs should be inspected prior to use and discarded at the end of each work shift.

Product Information .

Industries, Factories Construction, Builder Projects Construction Sites

Honeywell Bilsom 303 Earplug Fitting, Acoustic Verification, and Deployment Guide

Pre-Use Inspection and Hygiene Preparation

Before deploying or inserting the Honeywell Howard Leight Bilsom 303 single-use earplugs, personnel must conduct a strict visual and tactile inspection. Examine each polyurethane foam earplug for surface dirt, particulate contamination, structural tearing, or signs of material degradation such as extreme hardness. Because the smooth, soil-resistant outer skin is engineered to prevent debris transfer into the auditory canal, any plug showing physical defects or contamination must be discarded immediately.

Aseptic handling is essential during initial preparation. Workers must thoroughly clean their hands prior to touching the earplugs to avoid transferring oils, industrial chemicals, or foreign grit onto the plug surface before it enters the ear canal.

Step-by-Step Ear Canal Insertion Protocol

Achieving rated acoustic attenuation—including the Single Number Rating (SNR) of 33 dB and Sound Level Conversion (SLC80) of 22 dB to 24 dB (Class 4)—depends entirely on executing an airtight mechanical seal via proper roll-down and insertion mechanics:

Step 1: Compression and Roll-Down: Using clean fingers, roll the entire tapered bullet-shaped plug between the thumb and forefingers. Compress the foam uniformly into the narrowest possible cylinder. Ensure the compressed cylinder remains smooth and free of sharp creases or longitudinal folds, which could create sound leakage channels.
Step 2: Ear Canal Realignment: With the opposite hand, reach over the top of the head and pull the outer ear (pinna) upward and backward. This anatomical manipulation straightens the natural bend of the ear canal, opening a direct path for complete insertion.
Step 3: Depth Seating: Promptly slide the compressed foam cylinder well inside the straightened ear canal before the polyurethane foam begins its recovery expansion.
Step 4: Dwell and Expansion Hold: Maintain steady finger pressure against the base of the earplug for 30 to 40 seconds. The patented low-pressure foam gently expands to fit the unique geometry of the user's ear canal, securing its position and counteracting the natural tendency of foam plugs to back out.

Fit Verification and Acoustic Seal Inspection

Proper fit verification involves both visual inspection and acoustic checks to confirm compliance with EN 352-2:2002 and AS/NZS 1270:2002 occupational safety standards:

Verification Method	Inspection Criteria	Corrective Action
Frontal Visual Check	When viewed directly from the front by a supervisor or peer, the outer ends of properly fitted earplugs must not be visible protruding past the tragus. The yellow and white Leight Stripe provides high-visibility contrast for rapid compliance audits.	If the plug base extends visibly outside the canal profile, remove the plug and repeat the roll-down and insertion protocol.
Acoustical Seal Test	In a representative noisy operational area, cup both hands firmly over the ears and release. If the seal is complete, blocking external ear canal access with cupped hands produces no noticeable acoustic difference.	If covering the ears results in a marked drop in noise, acoustic bypass is present; fully remove and re-seat the earplug.

Safe Extraction Protocol and Shift Disposal

Improper or rapid extraction can induce sudden pressure changes against the tympanic membrane. To safely remove the Bilsom 303 earplug, gently twist the body of the plug while slowly pulling outward in a smooth, continuous motion.

The Bilsom 303 is classified strictly as single-use Category II personal protective equipment. To uphold industrial hygiene standards and prevent microbial accumulation, earplugs must be discarded after each use or at the conclusion of every work shift. Plugs must never be washed, reused, or transferred between workers.

Dispenser Loading and Facility Station Deployment

For plant-wide distribution across manufacturing, chemical, construction, and pharmaceutical work sites, Honeywell Bilsom 303 earplugs are packaged for centralized deployment. Uncorded variants are available in individual polybags, resealable bulk bags, and bulk refill containers engineered for wall-mounted or tabletop dispenser units. The product integrates directly into Honeywell Leight Source 100, Leight Source 400, and Leight Source 500 dispensing systems, ensuring controlled single-pair delivery at clean station entry points.

Industrial Applications and Operational Use Cases

Honeywell Howard Leight Bilsom 303 single-use earplugs are engineered for medium-to-high noise hazard environments across primary industrial, municipal, and institutional operations. Featuring a high Single Number Rating (SNR) of 33 dB and an SLC80 rating of 22 dB (Class 4 for uncorded variants; 24 dB Class 4 in Leight Source 400 formats), these hearing protectors mitigate continuous, intermittent, and impact industrial noise exposures in compliance with EN 352-2:2002 and AS/NZS 1270:2002 standards.

Heavy Manufacturing, Metal Fabrication, and Industrial Assembly

In heavy industrial plants, machine shops, and fabrication lines, personnel encounter persistent decibel loads from stamping, milling, metalworking tools, and plant machinery. The patented low-pressure polyurethane foam expands slowly over a 30 to 40-second dwell time, conforming evenly to the ear canal geometry. This low-pressure expansion eliminates canal fatigue and stops the earplug from backing out during prolonged shifts, while providing certified Category II PPE protection against occupational noise exposure under Council Directive 89/686/EEC and EU Hearing Directive 2003/10/EC.

Chemical and Pharmaceutical Processing Plants

Processing facilities demand strict contamination controls alongside acoustic mitigation near pumps, mixers, centrifuges, and compressors. The Bilsom 303 is manufactured with a smooth, soil-resistant outer skin that inhibits particulate accumulation and fluid transfer before canal insertion. Because these environments require pristine hygiene management, the plugs are designated for single-use deployment and disposed of at the end of each work shift, preventing cross-contamination in regulated environments.

Construction Sites, Civil Engineering, and Municipal Services

Field workers and infrastructure crews operating pneumatic equipment, heavy earthmoving machinery, and road maintenance tools operate in variable outdoor acoustics. The tapered bullet-shape design allows quick roll-down into a narrow cylinder for fast, secure insertion in high-turnover field work. The contrasting yellow and white Leight Stripe visual pattern enables safety officers and site supervisors to execute instant visual compliance checks from a distance to verify proper PPE adherence on active sites.

Transportation, Fleet Maintenance, and Municipal Depots

Depots, maintenance yards, rail terminals, and transit maintenance bays expose technicians to severe acoustics generated by diesel powerplants, air brake exhausts, and pneumatic tooling. Bilsom 303 earplugs accommodate diverse workforces by offering two distinct anatomical sizes: Regular/Large (manufacturer part numbers 1005073 and 1007192) and Small (part numbers 1005074 and 1007193), ensuring an airtight seal for technicians who find standard foam plugs ill-fitting.

Government, Medical Facilities, and Law Enforcement

High-volume institutional facilities benefit from hygienic, touchpoint-managed acoustic protection. Bilsom 303 earplugs integrate into centralised dispensing hardware, compatible with Honeywell Leight Source 100, Leight Source 400, and Leight Source 500 bulk dispensers. This configuration facilitates controlled distribution at security gates, mechanical rooms, test ranges, and physical plant perimeters.

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