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 5905-00-813-2280
NSN 6240-00-309-7767
NSN 5905-01-493-5547
NSN 6685-00-155-8158
NSN 5910-00-739-3370
NSN 6220-01-510-9765
NSN 6685-00-922-9397
NSN 5925-01-189-7513
NSN 5975-01-057-6576
NSN 5975-01-148-7686
NSN 5990-00-042-3413
NSN 5975-01-233-0684