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 5895-01-139-4272
NSN 7035-01-448-4740
NSN 5895-01-560-0096
NSN 5915-01-557-5332
NSN 5835-01-205-3089
NSN 6135-00-223-9563
NSN 5996-00-103-7124
NSN 5960-01-624-1170
NSN 6135-01-303-0295
NSN 5905-01-463-7860
NSN 6645-01-514-0236
NSN 5925-01-485-3595