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 6685-00-153-3914
NSN 6645-01-149-9176
NSN 5895-01-427-3727
NSN 5920-01-146-3962
NSN 5990-01-345-1468
NSN 5945-00-383-5356
NSN 5975-01-581-2006
NSN 5905-01-293-9718
NSN 5925-01-452-2778
NSN 5905-01-481-7368
NSN 6685-01-149-9196
NSN 6105-00-146-5086