Value Collection ZMSCS70212 Silicone O-ring Dash 212 Pk100

Product Description

The VALUE COLLECTION ZMSCS70212 is a Dash 212 silicone O-ring designed for static and dynamic sealing applications across a wide range of operating temperatures. Measuring 0.875 inches inside diameter, 1.125 inches outside diameter, and 0.125 inches thick, this round cross-section ring is molded from silicone with a Shore A hardness of 70. Its rated temperature range spans -80 degrees F to 450 degrees F, making it well suited for applications that demand dry heat resistance and reliable sealing under thermal cycling. Each package contains 100 rings.

This O-ring is used in HVAC, plumbing, refrigeration, and general industrial assemblies where the seal must withstand elevated temperatures, ozone exposure, and weathering. It is a common fit for shaft seals, valve seats, pump housings, and fluid line connections in residential and light commercial equipment. Technicians and maintenance professionals install these rings wherever a Dash 212 size silicone seal is specified. Note that silicone offers limited resistance to petroleum-based oils, so verify fluid compatibility before use.

Key Features

• Temperature range of -80 degrees F to 450 degrees F suits wide thermal cycling demands
• Round cross-section silicone construction provides consistent sealing compression
• Shore A hardness rating of 70 balances flexibility with resistance to extrusion
• Good weather and ozone resistance extends service life in exposed installations
• Compatible with oils, chemicals, and solvents in appropriate concentrations — verify specific fluid compatibility
• Sold in a package of 100 rings for shop stock or bulk service use

Compatibility

Designed as a standard Dash 212 O-ring replacement for any application calling out a 0.875-inch ID silicone seal with a 0.125-inch cross section.

Installation Notes

Installation of O-rings should be performed with the mating assembly depressurized and fully de-energized or isolated from fluid flow. Lubricate the ring with a compatible fluid or silicone grease before seating to prevent tearing during assembly. Avoid rolling or twisting the ring into the groove, as this causes uneven compression and premature failure. Confirm groove dimensions match the Dash 212 cross section before installation.