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 5835-01-367-4330
NSN 5910-00-528-9714
NSN 6220-01-061-3615
NSN 6650-00-953-0127
NSN 6610-01-188-8163
NSN 5895-00-989-3586
NSN 5990-00-698-3963
NSN 6685-00-534-9056
NSN 5975-00-760-6340
NSN 5925-01-441-9316
NSN 6150-01-237-1165
NSN 5960-01-230-2806