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 6220-00-528-7752
NSN 2925-00-176-3889
NSN 5895-01-618-9783
NSN 6320-01-497-3116
NSN 5965-00-243-9496
NSN 6645-01-123-4443
NSN 6110-01-514-7608
NSN 5945-00-967-1232
NSN 5975-01-165-2035
NSN 5985-00-629-6901
NSN 5990-01-598-3251
NSN 5925-00-539-8372