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 5895-01-089-7858
NSN 5920-01-391-7624
NSN 5920-00-076-9889
NSN 5895-01-160-5955
NSN 6320-00-070-4544
NSN 6610-01-503-0153
NSN 6135-00-715-4001
NSN 5996-01-334-8136
NSN 6240-00-201-1200
NSN 6620-01-529-1147
NSN 6645-01-016-1306
NSN 6110-01-239-9319