Value Collection ZMSCS70336 Silicone O-ring Dash 336

Product Description

The VALUE COLLECTION ZMSCS70336 is a silicone O-ring with a round cross section, designed for static and dynamic sealing applications across a wide range of service conditions. With a 2.875-inch inside diameter, 3.25-inch outside diameter, and 0.1875-inch thickness, this is a Dash 336 standard O-ring. The silicone compound delivers a rated service range from -80 degrees F to 450 degrees F, making it well suited for applications requiring stable performance through thermal cycling and dry heat exposure. Hardness is rated at 70 Shore A. Each package contains 10 O-rings.

This O-ring is used in HVAC, plumbing, pool, and general mechanical assemblies where a reliable seal is needed against oils, chemicals, and solvents within the rated compatibility range. It is particularly appropriate in applications demanding good weather and ozone resistance. The silicone construction also provides good dry heat resistance, making it a common choice in high-temperature service environments such as heat exchanger housings, pump bodies, valve stems, and equipment exposed to outdoor weathering. Licensed tradespeople and maintenance technicians typically install these as part of scheduled maintenance or component rebuild procedures.

Key Features

• Dash 336 standard sizing: 2.875 inches ID, 3.25 inches OD, 0.1875 inches thick
• Silicone compound rated from -80 degrees F to 450 degrees F service temperature
• 70 Shore A hardness, hard rating, round cross section
• Resistant to weathering, ozone, and dry heat
• Compatible with oils, chemicals, and solvents within rated limits
• Sold in packs of 10 to support service kit builds and repeat maintenance tasks

Compatibility

Designed as a standard Dash 336 O-ring replacement for any application specifying a 2.875-inch ID silicone O-ring with a 0.1875-inch cross section thickness.

Installation Notes

Depressurize and de-energize the system before replacing any O-ring seal. Clean the groove and mating surfaces thoroughly to remove debris, old sealant, or residue before seating the new O-ring. Avoid twisting the O-ring during installation, and confirm the groove dimensions match Dash 336 specifications before proceeding. Verify chemical compatibility with the specific media in the system, as silicone has limited resistance to some petroleum-based fluids under pressure.