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 6135-01-171-9299
NSN 5950-00-359-9607
NSN 6135-01-048-0910
NSN 6685-01-031-6157
NSN 5910-01-425-3281
NSN 5925-00-355-6124
NSN 6105-01-588-3986
NSN 6685-01-120-5861
NSN 5990-01-504-9265
NSN 6620-00-904-2139
NSN 6620-01-025-8739
NSN 4140-00-230-4252