HP-M1 Adjustable Earmuffs | NRR 23 dB
Bullhead Safety HP-M1 earmuffs provide reusable, over-the-head hearing protection with an NRR of 23 dB. The black reinforced plastic headband has two-point adjustment, paired with high-visibility yellow/green ABS cups and soft PVC ear cushions. Each complete earmuff is individually packaged in a polybag.
This economy model gives safety managers an option for routine employee issue, contractor access and facility hearing protection programs. Select it using measured workplace noise and individual fit. Bright cups help identify the equipment, but visibility does not confirm that the cushions seal correctly.
Bullhead Safety HP-M1
SHP-M1
NRR 23 dB
Over-the-head
ABS cups; soft PVC cushions
Reinforced plastic; two-point adjustment
Key Features
- Adjustable band for positioning the cups around the ears.
- Yellow/green earcups with a black headband.
- Durable ABS cup construction.
- Soft cushions for contact against the head.
- Individual packaging for storage and distribution.
Common Uses and Applications
- Manufacturing, assembly and machine operation.
- Construction and facility maintenance.
- Grinding and sanding operations.
- Transportation and contractor PPE programs.
Application suitability depends on the actual noise exposure, work duration and protection achieved. Do not assume that the same earmuff is appropriate for every job within an industry.
Fit and PPE Compatibility
Wear the band over the head and adjust both cups to surround the ears. Check for gaps caused by eyewear, hair, respirator straps or other equipment. Evaluate the complete PPE combination during normal working movements. If a comfortable seal cannot be maintained, choose another protector.
The manufacturer documents an over-the-head design. Do not transfer the rating to behind-the-head or under-chin use. Plastic construction alone does not establish electrical insulation, arc-flash protection or suitability for energized work.
Inspection and Replacement Planning
Inspect the band, cups and cushions before use. Follow the supplied instructions for cleaning and storage, and replace damaged equipment promptly. Bullhead lists the HP-M1-RK hygiene/replacement kit for this model; verify current availability before planning maintenance supplies.
For recurring orders, consider wearer trials, replacement equipment and storage at the point of use. Keep clean protection available before workers enter hazardous noise areas. Remove earmuffs only after leaving the exposure area.
Hearing Protection Standards
The manufacturer sheet reports ANSI S3.19-1974 attenuation data and NRR 23 dB. This laboratory rating does not guarantee a 23 dB reduction for each wearer.
OSHA 29 CFR 1910.95 addresses occupational noise, hearing conservation, fitting, training and attenuation evaluation. Purchasing rated earmuffs alone does not establish compliance.
NIOSH recommends individual quantitative fit testing to determine personal attenuation. Use fit results with measured exposure when selecting protection.
Manufacturer Documentation
Bullhead Safety HP-M1 specification sheet — construction, packaging and attenuation data (PDF)
FAQ
Is this a Howard Leight earmuff?
No. The confirmed product is Bullhead Safety HP-M1.
Does this model fold?
HP-M1 is the adjustable economy model. Bullhead identifies HP-M2 as its foldable model.
Is the replacement kit included?
No. HP-M1-RK is a separate maintenance accessory.
