Value Collection ZMSCS70280 Silicone O-ring Dash 280

Product Description

The VALUE COLLECTION ZMSCS70280 is a round cross-section silicone O-ring designed for static and dynamic sealing applications across a wide range of temperatures and environments. With a 14-inch inside diameter, 14.25-inch outside diameter, and 0.125-inch cross-section thickness, this is a large-format seal intended for flanged connections, pipe joints, covers, and industrial equipment closures. Rated at 70 Shore A hardness, the silicone compound delivers firm but compliant sealing force. The operating temperature range spans from -80 degrees F to 450 degrees F, making it well suited for applications where dry heat resistance and thermal cycling are primary concerns.

This O-ring is used in plumbing, HVAC, chemical processing, and general industrial maintenance wherever a large-diameter face seal or groove seal is required. The silicone material offers good resistance to weathering and ozone exposure, making it appropriate for outdoor equipment and aging HVAC housings. It is commonly installed by plumbers, HVAC technicians, and industrial maintenance personnel working on pump housings, large-bore pipe flanges, access covers, and similar assemblies. The white color aids visual inspection during installation and maintenance checks.

Key Features

• Wide temperature range: -80 degrees F to 450 degrees F suits both cryogenic-adjacent and high-heat dry applications
• 70 Shore A hardness rating provides a firm, durable seal under compressive load
• Round cross-section geometry seats consistently in standard O-ring grooves
• Silicone compound resists weathering, ozone, and dry heat degradation
• Compatible with oils, chemicals, and solvents within the material limits of silicone
• Large 14-inch ID format targets industrial flanges, covers, and large-bore fittings

Compatibility

Designed as a Dash 280 O-ring replacement for any standard groove or face-seal application requiring a 14-inch ID, 14.25-inch OD, 0.125-inch cross-section silicone seal.

Installation Notes

Licensed plumbers, HVAC technicians, and qualified maintenance personnel typically install large-diameter O-rings of this type. De-energize all systems and relieve pressure from the assembly before breaking any joint or removing an access cover. Inspect the groove for nicks, corrosion, or debris before seating the new O-ring. Do not twist or roll the O-ring during installation, as spiral set can cause immediate seal failure.