Larsen Supply Co. 02-1640P Stem Packing Washer 15/32x5/8

Product Description

The LARSEN SUPPLY CO., INC. 02-1640P is a Teflon stem packing washer designed for faucet and shower valve stem assemblies. This washer creates a reliable seal around the valve stem to prevent leaks at the packing nut. Sized at 15/32 inches inside diameter, 5/8 inches outside diameter, and 5/16 inches thick, it conforms to the No. 21 packing washer standard. The Teflon material resists chemical degradation and provides low-friction performance across a wide range of water temperatures and pressures. Plumbers and service technicians use this part when rebuilding dripping faucets or leaking shower valve stems.

This packing washer is suited for residential and light commercial plumbing applications where valve stem packing has worn out or been damaged. It is commonly installed during routine faucet rebuild service on compression-style faucets and older shower valves that use a threaded stem with a packing nut. The part is sold individually in a bagged package, making it appropriate for single-unit service calls or bench stock replenishment.

Key Features

• Teflon construction resists corrosion, chemical attack, and heat degradation
• No. 21 standard sizing for straightforward cross-referencing
• Dimensions of 15/32 inches ID x 5/8 inches OD x 5/16 inches thick for precise fitment
• Low-friction material reduces stem wear during operation
• Individually bagged for clean, ready-to-install packaging

Compatibility

Designed as an OEM-style replacement packing washer for compression faucets and shower valve stems requiring a No. 21 Teflon stem packing washer measuring 15/32 inches inside diameter by 5/8 inches outside diameter.

Installation Notes

Installation is performed by licensed plumbers or qualified service technicians. Shut off the water supply at the fixture stop valve or main shutoff before disassembling the valve stem. Remove the packing nut, extract the old washer, and seat the replacement packing washer firmly before reassembling. Follow all applicable local plumbing codes, including IPC guidelines, for valve service and reassembly.