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 5935-00-837-8043
NSN 5910-01-592-3491
NSN 5950-00-189-0551
NSN 5950-00-988-1206
NSN 6620-00-280-2874
NSN 2925-01-387-0870
NSN 5905-01-455-1637
NSN 2925-01-219-9471
NSN 5925-01-103-5874
NSN 5960-01-262-5048
NSN 4140-01-055-2900
NSN 6685-00-768-7633