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 5925-01-470-7737
NSN 6105-01-309-3826
NSN 5915-01-478-7464
NSN 6110-01-578-8356
NSN 5999-01-553-3779
NSN 6220-01-127-7173
NSN 5925-00-468-2757
NSN 5965-01-449-1101
NSN 6685-01-323-3610
NSN 5915-01-061-4415
NSN 6135-00-351-8606
NSN 6685-01-362-7542