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 6145-00-635-9957
NSN 6650-00-684-3060
NSN 6685-01-225-9564
NSN 5975-01-500-7723
NSN 5915-00-056-9935
NSN 5945-00-100-1261
NSN 5960-00-281-0824
NSN 5905-01-163-3909
NSN 6620-00-663-8833
NSN 5920-01-540-0668
NSN 5925-00-566-4169
NSN 7035-01-027-1718