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 6645-00-674-9728
NSN 6685-01-426-7958
NSN 6685-01-230-3907
NSN 5855-01-250-2421
NSN 5999-00-061-5154
NSN 5975-01-436-3622
NSN 5935-00-284-3984
NSN 5930-01-423-1040
NSN 5975-00-265-7774
NSN 6130-00-266-1051
NSN 5999-00-284-7640
NSN 5895-00-735-2273