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 6685-00-578-5951
NSN 5905-01-554-7350
NSN 5985-00-004-1946
NSN 5996-00-840-5246
NSN 5930-00-935-8659
NSN 6645-01-492-9823
NSN 5895-01-289-4685
NSN 5835-01-327-0770
NSN 2925-00-508-6032
NSN 5985-00-740-7154
NSN 5935-01-446-1413
NSN 5895-01-273-6590