Larsen Supply Co. 02-1531 Size 20 O-ring 2 Pack

Product Description

The LARSEN SUPPLY CO., INC. 02-1531 is a size 20 O-ring sold in a 2-pack, designed for sealing applications in plumbing, HVAC, and related mechanical systems. Each ring measures 7/16 inches inner diameter, 11/16 inches outer diameter, and 1/8 inches cross-section. These O-rings provide a reliable compression seal at threaded fittings, valve stems, and connection points where fluid or gas containment is required. The carded 2-pack format keeps parts organized on the service truck and makes it easy to confirm you have a replacement on hand before starting a repair.

Size 20 O-rings see regular use in residential and light commercial plumbing repairs, faucet rebuilds, valve cartridge replacements, and HVAC refrigerant-side or hydronic fittings that call for this cross-section. Plumbers, HVAC technicians, and pool service professionals commonly stock these as part of a standard seal assortment. The compact carded packaging suits both shop inventory and field service kits.

Key Features

• Size 20 O-ring with 7/16 inches inner diameter, 11/16 inches outer diameter, and 1/8 inches cross-section
• 2-pack carded format for convenient field inventory management
• Suitable for sealing threaded fittings, valve stems, and mechanical connection points
• Compact and lightweight at 0.1 pounds per package for easy stocking

Compatibility

Designed as a standard size 20 O-ring replacement for plumbing valves, faucet assemblies, and mechanical fittings requiring a 7/16 x 11/16 x 1/8 inch seal profile.

Installation Notes

O-ring replacement is typically performed by a licensed plumber or HVAC technician. Always shut off the water supply or isolate the refrigerant circuit and relieve system pressure before disassembling any fitting or valve. Inspect the seating surface for nicks or corrosion before installing the new O-ring. Do not use petroleum-based lubricants on O-rings unless the ring material is confirmed compatible with that lubricant.