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 5985-01-134-0461
NSN 2925-00-448-4685
NSN 6645-01-350-3138
NSN 6105-01-071-4307
NSN 6240-00-252-7138
NSN 6320-01-113-7647
NSN 5950-01-463-7780
NSN 5965-00-335-0305
NSN 5855-01-426-5589
NSN 6240-01-609-7740
NSN 2925-01-327-3069
NSN 6105-01-296-5012