Overview
The MSA 813138 is a small replacement silicone nosecup engineered for seamless integration with MSA Ultravue® and Ultra-Twin® full facepiece respirators. As a critical component in industrial respiratory protection, this nosecup improves comfort and optical clarity during extended use, making it essential for workers in hazardous environments.
Key Features
- Tool-Free Installation: Attaches securely to the facepiece without requiring additional tools or modifications
- Lens Fogging Reduction: Minimizes contact between moist exhalation and the facepiece lens, significantly reducing fogging in high-humidity and low-temperature conditions
- Durable Silicone Construction: Black silicone material provides flexibility, comfort, and long service life
- Drop-In Replacement: Direct replacement for worn or damaged nosecups on compatible facepiece models
- Small Sizing: Engineered for proper fit on small-sized Ultravue and Ultra-Twin facepieces
Technical Specifications
- Part Number: MSA 813138
- Size: Small
- Material: Black Silicone
- Quantity per Unit: 1 each
- Compatible Facepiece Series: Ultravue®, Ultra-Twin®
- Installation Method: Tool-free attachment
- Primary Function: Nosecup assembly with anti-fogging properties
Typical Applications
The MSA 813138 nosecup is widely used in industrial, chemical, biological, and emergency response sectors. Common applications include:
- Oil, gas, and petrochemical industry operations
- Fire service and rescue operations
- Mining and construction environments
- Military and tactical operations
- General industrial respiratory protection programs
- Hazmat response and confined space entry
Compatibility & Replacements
Compatible With
- MSA Ultravue® Full Facepiece Respirator (Small)
- MSA Ultra-Twin® Full Facepiece Respirator (Small)
- MSA respiratory protection systems using small-sized facepieces
- Industrial breathing apparatus integrated with compatible canister mounts
Replaces / Drop-In Replacement For
- Original or worn MSA 813138 nosecups on Ultravue and Ultra-Twin small facepieces
- Any damaged or fogged silicone nosecup previously installed on compatible small facepiece assemblies
- Note: Verify size compatibility before ordering—MSA offers medium (813139) and large (813140) alternatives for larger facepiece sizes
Works With
- MSA Ultravue® Demand Facepiece assemblies
- MSA Ultra-Twin® Full Facepiece Respirator systems
- Standard MSA supplied-air and self-contained breathing apparatus configurations
- NATO 40mm dual-canister mounts (when integrated into complete respirator systems)







