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Transparent 25 ft air-supply hose with brass fittings

MSA

MSA 455021 Air-Supply Hose 25ft

SKU CH-8KW7-ZMFCB

A 25 ft NIOSH-approved airline hose for supplied-air respirator systems

  • Product colorTransparent
  • 25-foot length gives extended reach for supplied-air systems
  • NIOSH-approved construction meets respiratory-protection standards
  • Neoprene cover resists abrasion and chemicals in harsh environments
  • Brass fittings provide secure, corrosion-resistant connections
  • Transparent hose wall allows visual inspection of airflow

Air-Supply Hose for SAR Systems

The MSA 455021 air-supply hose delivers breathing air to supplied-air respirator systems in industrial and rescue environments. It is built for workers who need a reliable air line during extended entries or confined-space operations. NIOSH approval confirms it meets the required respiratory protection standards.

Neoprene Construction with Brass Fittings

A transparent neoprene cover resists abrasion, oil and weathering while allowing visual inspection of the hose interior. Brass end fittings provide corrosion-resistant connections that hold up to repeated coupling and uncoupling in harsh conditions. The 25 ft length gives mobility without excessive drag or coil bulk.

Replaces Worn or Damaged Airline Hoses

This hose serves as a direct replacement when an existing airline shows cracks, cuts or fitting corrosion that could compromise air delivery. Upgrading is worth it whenever inspection reveals cover degradation or when a longer reach is required for a new work layout. It is not suited for applications needing high-pressure hydraulic lines or non-breathing-air transfer.

How it compares

Measured against everything we stock in Bandages & First Aid Supplies, at today’s prices. Recalculated every night.

Price $279.99
Pricier than about 92% of the 742 comparable items (median $14.99).

Specifications

Product
Brand nameMSA SAFETY
Product colorTransparent

Questions about this item

What connection standard does the 455021 hose use and what does it limit?

The hose is built for SAR airline systems and carries NIOSH approval, so the coupling standard caps the maximum working pressure and flow rate that the respirator can safely deliver.

What physical clearance and fittings are needed to mount the 25 ft hose?

A 25 ft length requires enough straight run to avoid sharp bends, and the brass end fittings must match the respirator inlet and the air-source outlet on the SAR system.

How is the 455021 hose installed and which step is often missed?

Connect the brass fittings to the air source and respirator, then pressurise the line and check every joint for leaks before entering the hazardous area.

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