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 5910-00-419-0330
NSN 5895-01-032-5929
NSN 5905-00-097-1174
NSN 5905-01-266-9922
NSN 6645-01-144-8627
NSN 5975-01-325-1753
NSN 5930-01-249-8292
NSN 5855-01-027-1571
NSN 2925-01-338-1687
NSN 5985-01-074-1598
NSN 6650-00-372-6035
NSN 6105-01-362-3898