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 5935-00-293-1863
NSN 5935-01-028-1963
NSN 6685-00-995-4957
NSN 5930-01-361-8472
NSN 5975-01-628-9526
NSN 5925-01-501-5213
NSN 6320-01-425-1417
NSN 6105-00-548-3547
NSN 5925-01-354-4064
NSN 6145-00-898-0219
NSN 5965-01-501-7987
NSN 5990-01-392-8842