Moldex 6430 Alphas Uncorded Reusable Earplugs — NRR 27dB, Pocket-Pak Plus, 50 Pairs

Moldex Alphas — NRR 27 dB Ultra-Soft Reusable Earplug, Three Wearing Positions, Metal Detectable Option

The Moldex Alphas is a NRR 27 dB reusable multi-use flanged earplug made from an ultra-soft compound that provides a noticeably gentler seal than standard flanged reusable earplugs — and features a three-position wearing design that allows workers to customize the earplug orientation to their individual ear canal geometry. Available as: 6430 uncorded, 6434 cloth cord, 6435 corded, and 6436 metal detectable corded. For the widest variant selection in the Moldex reusable line, see the Moldex Rockets. For maximum NRR in a disposable foam format, see the Moldex Pura-Fit (NRR 33).

Key Features

• Ultra-soft flanged material — gentlest seal in the Moldex reusable line: Standard flanged reusable earplugs use firmer polymers that can cause pressure discomfort when the flange presses against the ear canal wall during extended wear. The Alphas' ultra-soft compound creates a more compliant, pressure-distributing seal — making them the recommended choice when workers report soreness or discomfort with harder-flanged reusable earplugs like Rockets or Jetz
• Three wearing positions — accommodates the widest range of ear canal geometries: The Alphas can be worn stem-up (standard), stem-down (inverted for shallower or angled canals), or with the cord draped over the outer ear for additional stability. This three-position system allows workers with unusual canal geometries or asymmetric ears to find a comfortable, consistently sealing position without requiring a different earplug model — reducing program complexity and improving compliance across diverse worker populations
• Metal detectable 6436 — NRR 27 reusable for food and pharmaceutical programs: The 6436 corded Alphas include metal-detectable compound in the flange material — satisfying detectability requirements (HACCP, BRC, SQF) for food processing and pharmaceutical environments while providing the comfort advantage of the ultra-soft Alphas design in a reusable format
• Pocket Pak Plus carry case: Each pair is stored in a Pocket Pak Plus case — a clip-on pocket carrier that keeps the earplug accessible, protected, and clean between uses. Workers clip the Pak to a belt or pocket, removing the need to handle loose reusable earplugs at the ear canal entrance after pocket storage
• Latex-free and PVC-free: Clean material formulation without latex, PVC, or common sensitizers

Alphas — All Variants

Frequently Asked Questions

What is the NRR of Moldex Alphas?

NRR 27 dB. Effective attenuation: (27 – 7) × 0.5 = 10 dB (OSHA 50% derating). Adequate for environments up to ~100 dBA TWA.

What makes Alphas different from Rockets?

Ultra-soft flange material for gentler ear canal contact, and three wearing-position options (stem up, stem down, cord-over-ear) that accommodate more ear canal geometries. Rockets have more variant options (camo, cloth cord, metal detectable all available). Both are NRR 27 reusable flanged earplugs.

What are the three wearing positions?

Stem up (standard), stem down (inverted — for different ear canal angles), and cord-over-ear (for additional stability). Each shifts the flange contact angle to accommodate different worker anatomies without requiring a different product.

Are Moldex Alphas latex-free?

Yes — latex-free and PVC-free. Appropriate for latex-sensitive workers and most industrial programs.

What is the Alphas 6436 metal detectable?

Corded NRR 27 Alphas with metal-detectable compound in the flange — for food and pharmaceutical facilities with metal detection/X-ray inspection requirements (HACCP, BRC, SQF).

Where can I buy Moldex Alphas in bulk?

WC Safety stocks 6430 uncorded, 6434 cloth cord, 6435 corded, and 6436 metal detectable. Browse the Moldex Earplugs collection at WC Safety →