Value Collection ZMSCS70FDA239 Silicone O-ring Dash 239

Product Description

The VALUE COLLECTION ZMSCS70FDA239 is a Dash 239 silicone O-ring with a round cross section, sold in a pack of 5. It measures 3.609 inches inside diameter, 3.875 inches outside diameter, and 0.125 inches thick. The compound is FDA-compliant red silicone rated at 70 Shore A hardness, making it suitable for applications that require contact with food-grade media or potable fluids. The temperature range spans -80 degrees F to 450 degrees F, giving it reliable performance across extreme thermal cycles. Plumbers, HVAC technicians, and industrial maintenance technicians commonly install this ring in flanged connections, pump housings, and valve bonnets.

This O-ring is intended for use in systems where wide temperature range performance and dry heat resistance are priorities. The silicone compound also offers good weather and ozone resistance. It carries limited oil resistance, so it is best suited for dry heat, water, mild chemical, and solvent-contact environments rather than petroleum-heavy hydraulic circuits. FDA-compliant material makes it appropriate for food processing equipment, beverage systems, and sanitary plumbing installations where regulatory compliance is required.

Key Features

• FDA-compliant silicone material suitable for food-contact and sanitary applications
• Wide service temperature range: -80 degrees F to 450 degrees F
• 70 Shore A hardness for a firm, reliable seal under compression
• Good weather and ozone resistance for outdoor or exposed installations
• Round cross section, Dash 239 standard sizing for drop-in replacement fitment
• Packed in quantities of 5 per package

Compatibility

Designed as a standard Dash 239 O-ring replacement for flanged fittings, pump housings, valve bodies, and equipment ports dimensioned to accept a 3.609-inch ID seal with a 0.125-inch cross section.

Installation Notes

Installation should be performed by a qualified plumber, HVAC technician, or industrial maintenance mechanic. De-energize equipment and relieve all system pressure before removing the existing seal. Inspect the groove and mating surfaces for damage, debris, or corrosion before seating the new O-ring. Do not use petroleum-based lubricants with silicone compounds; use a silicone-compatible assembly lubricant if needed to ease installation.