3M 7000009668 Peltor Optime H7P3E Cap Mount Earmuffs

Product Description

The 3M 7000009668 is a cap-mount hearing protector from the Peltor Optime line, designed for industrial and construction environments where noise levels reach up to 101 dBA. The earmuff assembly mounts directly to a compatible hard hat, keeping the worker protected without requiring a separate headband. Liquid- and foam-filled ear cushions create a consistent acoustic seal against the ear, delivering a Noise Reduction Rating (NRR) of 24 dB. The ABS construction keeps the unit lightweight at 0.77 pounds. Color-coded components aid supervisors and safety officers in quick compliance verification across a job site.

These earmuffs are suited for use in construction, manufacturing, utilities, and other trade environments where hard hat use is already required. The cap-mount configuration integrates with most slotted hard hat shells, allowing workers to flip the muffs up when noise is not present and back down quickly when entering loud work zones. Licensed electricians, HVAC technicians, plumbers, and general trade workers operating near loud equipment will find this a practical addition to an existing hard hat setup. CSA Class A certification confirms performance under Canadian standards as well.

Key Features

• NRR 24 dB rating for noise environments up to 101 dBA
• Cap-mount design attaches to most slotted hard hats without tools
• Liquid- and foam-filled ear cushions for consistent acoustic seal
• ABS shell construction for durability at 0.77 pounds
• Color-coded components support job-site compliance sighting
• CSA Class A certified

Compatibility

Designed for use with most slotted cap-style hard hats that accept standard earmuff attachment slots. Verify hard hat slot compatibility before installation.

Installation Notes

Installation is performed by snapping the earmuff attachment brackets into the designated slots on the hard hat shell — no tools are required for most cap-style hard hats. Inspect the cushion seal and attachment points before each use to confirm no cracking or compression loss has occurred. Follow applicable OSHA and CSA hearing conservation program requirements when specifying hearing protection for your work environment. Replace ear cushions when the foam or liquid fill shows visible wear, as degraded cushions reduce the effective NRR.

Technical Specifications

• Noise Reduction Rating (NRR): 24 dB
• Maximum Noise Environment: 101 dBA
• Certification: CSA Class A
• Mount Type: Cap Mount, Hard Hat Attached
• Shell Material: ABS
• Ear Cushion Fill: Liquid and foam
• Weight: 0.77 pounds
• Length: 19.75 inches
• Width: 11.88 inches
• Height: 9 inches

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000009668