Value Collection ZMSCS70241 Silicone O-ring Dash 241 5-pack

Product Description

The VALUE COLLECTION ZMSCS70241 is a round cross-section silicone O-ring designed for static and dynamic sealing applications across HVAC, plumbing, pool, and industrial equipment. It measures 3.875 inches inside diameter, 4.125 inches outside diameter, and 0.125 inches thick, conforming to Dash 241 sizing. The silicone compound delivers a wide service temperature range of -80 degrees F to 450 degrees F, making it a reliable choice where rubber or neoprene compounds fall short. Each package contains 5 O-rings. Licensed trades and maintenance professionals install this part when servicing equipment that demands dry heat resistance and dimensional consistency under compression.

This O-ring suits applications requiring good weather and ozone resistance along with limited oil resistance. It is rated for use in contact with oils, chemicals, and solvents within the compound limits. Typical install scenarios include sealing flanged pipe connections, pump housings, valve bodies, and heat-exposed fittings in residential and light commercial systems. The hard durometer rating (Shore A 70) maintains seating force under thermal cycling. This size is commonly encountered in larger-diameter pipe and equipment interfaces in HVAC and pool circulation systems.

Key Features

• Silicone compound rated from -80 degrees F to 450 degrees F for wide temperature service
• Dash 241 standard sizing: 3.875 inches ID, 4.125 inches OD, 0.125 inches thick
• Shore A 70 hardness provides firm, reliable seating in high-temperature and dry-heat environments
• Round cross-section for consistent compression and seal integrity
• Compatible with oils, chemicals, and solvents within silicone compound limits
• White color for visual identification; sold in a 5-piece package

Compatibility

Designed as a Dash 241 standard O-ring replacement for any equipment or fitting requiring a 3.875-inch ID silicone seal with a 0.125-inch cross section. Confirm groove dimensions and compatibility with process fluids before installation.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or pool service professionals. Always de-energize equipment and relieve system pressure before replacing seals. Clean the O-ring groove thoroughly and inspect for damage or corrosion before seating the new ring. Do not use petroleum-based lubricants with silicone O-rings; use a silicone-compatible assembly lubricant only.