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 6610-01-133-2602
NSN 4140-01-020-9926
NSN 6130-01-153-2265
NSN 5945-00-280-1567
NSN 6150-00-858-5116
NSN 5935-00-065-8288
NSN 6685-00-976-3920
NSN 6135-01-217-3292
NSN 5930-01-130-8493
NSN 6610-01-396-5628
NSN 5975-01-055-6866
NSN 7035-00-679-9027