MSA OptimAir TL PAPR O-Ring, 5/16in, 4-1/2in, is a replacement seal for the MSA OptimAir TL PAPR respirator system’s filter assembly. This O-ring provides a tight seal between the filter and housing to prevent air leaks during operation. Use it when replacing worn seals in the OptimAir TL PAPR system to maintain proper fit and performance.
