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 5895-01-609-4139
NSN 5910-00-313-7206
NSN 6135-00-851-8575
NSN 5975-01-350-3425
NSN 6645-00-270-6817
NSN 6610-01-338-6272
NSN 5925-01-232-3928
NSN 7035-01-527-2560
NSN 5999-00-293-4326
NSN 6685-01-163-9556
NSN 5915-01-415-6307
NSN 6685-01-459-8439