Specifications:

• Brand: 3M
• Product Line: E-A-R UltraFit
• Model Number: 340-4004
• Product Type: Reusable Corded Earplugs
• Material: Elastomeric Polymer
• Color: Yellow
• Noise Reduction Rating (NRR): 25 dB
• Design: Triple-flange pre-molded earplug
• Cord Type: Attached cord for convenience and reduced loss
• Reusable: Yes
• Metal Detectable: No
• Packaging: Typically packaged individually or in bulk industrial packaging
• Compliance: Meets applicable hearing protection standards
• Packaging: Box of 100 Pairs

Ideal Industries:

• Construction
• Manufacturing
• Industrial maintenance
• Automotive manufacturing
• Warehousing and logistics
• Energy and utilities
• Facilities management
• Metal fabrication
• General industry

Ideal Applications:

• General industrial noise environments
• Construction site noise protection
• Manufacturing operations
• Equipment maintenance and repair work
• Warehouse and distribution centers
• Machine operation areas
• Assembly line work
• Facility maintenance tasks
• Short-term or intermittent noise exposure areas

The 3M E-A-R UltraFit 340-4004 Elastomeric Polymer Corded Earplugs are a dependable solution for workers who need consistent, reusable hearing protection in moderate to high noise environments. Designed with a triple-flange pre-molded shape, these reusable corded earplugs provide a comfortable and secure fit for a wide range of ear canal sizes without the need for rolling or shaping like traditional foam earplugs. Many safety managers and workers ask whether pre-molded earplugs are easier to use than disposable foam plugs; in practice, the UltraFit design allows quick insertion, reliable sealing, and simple removal, making them ideal for environments where hearing protection must be inserted and removed frequently throughout the workday. With a Noise Reduction Rating (NRR) of 25 dB, these industrial earplugs help reduce exposure to hazardous workplace noise from machinery, power tools, compressors, and production equipment while still allowing workers to remain aware of important environmental sounds. The durable elastomeric polymer construction allows the earplugs to be washed and reused multiple times, which can help reduce long-term PPE costs while maintaining consistent protection. The attached cord helps prevent loss and keeps the plugs accessible when not in use, an important feature for workers moving between quiet and high-noise zones. Buyers often ask whether reusable hearing protection maintains performance over time; when properly cleaned and inspected, high-quality polymer earplugs like the UltraFit model are designed to maintain their shape and protective capability through repeated use. These corded hearing protection earplugs are widely used in construction sites, manufacturing plants, warehouses, utilities, and maintenance operations where dependable, easy-to-deploy hearing protection is essential for worker safety and regulatory compliance. Enviro Safety Products is an experienced and trusted supplier of certified PPE, providing professional-grade hearing protection solutions that help organizations protect workers, maintain compliance, and support safer industrial workplaces.

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