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 6240-01-220-5225
NSN 5925-01-324-6032
NSN 5930-01-009-1565
NSN 5985-00-529-0093
NSN 6650-01-181-6037
NSN 5920-00-585-0104
NSN 5905-01-329-6810
NSN 6645-00-410-2395
NSN 5895-00-195-2751
NSN 6150-01-621-8101
NSN 6685-01-125-6687
NSN 6105-00-635-7463