A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5950-00-081-8787
NSN 5950-00-242-4311
NSN 6620-01-338-8945
NSN 5905-01-275-8971
NSN 5950-01-606-9573
NSN 6645-01-128-6932
NSN 6320-01-302-5157
NSN 5910-00-435-8327
NSN 6685-00-489-5746
NSN 6320-01-113-7647
NSN 5930-01-170-4426
NSN 6620-01-106-3553