Value Collection ZMSCS70202 Silicone O-ring Dash 202 50 Pack

Product Description

The VALUE COLLECTION ZMSCS70202 is a Dash 202 silicone O-ring with a round cross section, measuring 0.25 inches inside diameter, 0.50 inches outside diameter, and 0.125 inches thick. Rated to a hardness of 70 Shore A, this O-ring is engineered for applications that demand a wide service temperature range of -80 degrees F to 450 degrees F. The silicone compound provides good dry heat resistance and strong weather and ozone resistance. It ships in a package quantity of 50 units. HVAC technicians, plumbers, and mechanical contractors install this type of seal in fluid and gas systems where standard nitrile or EPDM compounds fall short due to temperature extremes.

This O-ring is suited for use in residential and light commercial HVAC systems, plumbing assemblies, and general industrial fluid connections where silicone elastomer performance is specified. Typical applications include gas valve body seals, condensate fittings, pump housings, and equipment subject to wide ambient temperature swings. Its limited oil resistance should be noted when selecting for petroleum-fluid service. The 50-piece pack supports service stock for shops and field technicians who regularly service high-temperature or outdoor-exposed equipment.

Key Features

• Wide temperature range: -80 degrees F to 450 degrees F continuous service
• 70 Shore A hardness rating for firm, reliable sealing under compression
• Round cross section for consistent gland fit and seating
• Good weather and ozone resistance for outdoor and exposed installations
• White silicone compound offers good dry heat resistance
• Packaged in quantities of 50 for shop stock or multi-unit service calls

Compatibility

Designed as a standard Dash 202 O-ring replacement suitable for static and low-pressure dynamic seal applications requiring silicone elastomer material in systems specified for that compound and groove size.

Installation Notes

Installation should be performed by a qualified technician following the equipment manufacturer's service procedures. De-energize electrical components and isolate pressure or fluid supply before disassembling any fitting or valve body. Lightly lubricate the O-ring with a compatible silicone-based grease prior to seating to prevent tearing during assembly. Note that this compound has limited oil resistance and should not be substituted into petroleum-fluid circuits without verifying material compatibility with the system designer's specifications.