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 6650-01-162-2881
NSN 6220-00-167-5441
NSN 6150-00-100-4757
NSN 5990-01-432-4984
NSN 6645-01-101-2877
NSN 6645-00-248-5434
NSN 5905-00-099-9995
NSN 6150-01-003-7328
NSN 6150-00-983-8832
NSN 6685-01-350-2825
NSN 5855-01-339-7675
NSN 5975-00-239-9784