Value Collection ZMSCS70108 Silicone O-ring Dash 108 100-pack

Product Description

The VALUE COLLECTION ZMSCS70108 is a Dash 108 silicone o-ring used to create static or dynamic seals in fluid, pneumatic, and chemical systems. It measures 0.250 inches inside diameter, 0.438 inches outside diameter, and 0.094 inches thick with a round cross section. The silicone compound delivers a working temperature range of -80 degrees F to 450 degrees F, making it well suited for applications that see wide thermal cycling or sustained dry heat. Hardness is rated at 70 Shore A. This package contains 100 rings. Licensed HVAC technicians, plumbers, and industrial maintenance pros stock these for sealing valve stems, fittings, and manifold ports.

This o-ring is appropriate for residential and light commercial plumbing, HVAC refrigerant-side fittings where silicone is acceptable, pneumatic tooling, and general-purpose chemical service. The silicone material provides good resistance to weathering and ozone exposure and handles a broad thermal envelope. Note that oil resistance is limited, so this ring is not the first choice for high-oil environments. It is sold in a package of 100, making it practical for service vans and shop stock replenishment.

Key Features

• Dash 108 standard sizing: 0.250 inches ID, 0.438 inches OD, 0.094 inches thick
• Silicone compound rated from -80 degrees F to 450 degrees F continuous service
• 70 Shore A hardness for firm sealing under compression
• Round cross section for reliable seat contact in standard o-ring grooves
• Resistant to weathering, ozone, and a broad range of chemicals and solvents
• Package of 100 rings for bench stock or service vehicle inventory

Compatibility

Designed as a standard Dash 108 o-ring replacement suitable for any application calling for a 0.250 inches ID silicone seal with a round cross section and 70 Shore A durometer. Not recommended for high-oil-concentration service due to limited oil resistance.

Installation Notes

O-ring installation should be performed by a qualified technician following the equipment manufacturer's service documentation. Shut off and depressurize the system completely before removing the old seal. Lightly lubricate the ring with a compatible lubricant prior to seating to prevent tearing during assembly. Inspect the groove and mating surfaces for burrs or corrosion before installing the new ring.