Value Collection ZMSCS70381 Silicone O-ring Dash 381

Product Description

The VALUE COLLECTION ZMSCS70381 is a Dash 381 silicone O-ring designed for static and dynamic sealing applications that require reliable performance across a wide temperature range. The ring measures 12 inches inside diameter, 12.375 inches outside diameter, and 0.1875 inches thick, with a round cross-section profile. At a 70 Shore A hardness rating, this O-ring falls in the hard range, providing firm compression resistance and consistent sealing force under load. Silicone compound delivers good dry heat resistance, weather resistance, and ozone resistance. Licensed plumbers, HVAC technicians, and industrial maintenance professionals regularly use O-rings of this specification in fluid and gas sealing applications.

This O-ring is suited for residential and commercial systems where operating temperatures swing from -80 degrees F to 450 degrees F. It is compatible with oils, chemicals, and solvents, though oil resistance is limited and should be evaluated against the specific fluid in service. Typical install scenarios include pipe flanges, pump housings, valve bodies, and equipment covers where a large-diameter face seal or static groove seal is required. The white silicone color aids visual inspection during service.

Key Features

• Wide service temperature range: -80 degrees F to 450 degrees F
• Round cross-section profile fits standard Dash 381 O-ring grooves
• 70 Shore A hardness for firm, consistent compression sealing
• Good weather and ozone resistance for outdoor or exposed installations
• Compatible with oils, chemicals, and solvents — verify oil service suitability for specific application
• White silicone color for easy visual identification during inspection

Compatibility

Designed as an OEM-style replacement or service part for any system requiring a Dash 381 O-ring with a 12-inch inside diameter, 12.375-inch outside diameter, and 0.1875-inch cross-section thickness in silicone compound.

Installation Notes

O-ring installation should be performed by a qualified technician familiar with the system being serviced. Shut off all pressure, flow, and power to the equipment before removing the old O-ring or installing the replacement. Lubricate the O-ring with a compatible lubricant — do not use petroleum-based lubricants on silicone seals unless verified compatible with the silicone compound. Inspect the groove and mating surfaces for nicks or corrosion before seating the new ring to ensure a proper seal.