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 6135-01-478-5598
NSN 5920-01-519-2712
NSN 5975-01-281-7270
NSN 6220-00-368-4945
NSN 6620-01-512-2016
NSN 5950-01-143-6271
NSN 6240-00-469-5100
NSN 5905-01-367-9808
NSN 5996-01-140-1784
NSN 5905-00-932-5100
NSN 6685-00-765-8283
NSN 6240-01-009-5827