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 5855-01-266-1645
NSN 5930-01-269-9967
NSN 6110-01-492-4199
NSN 5925-01-054-4226
NSN 6130-01-105-9609
NSN 5910-00-811-5514
NSN 5985-00-296-7656
NSN 6610-00-609-7168
NSN 5910-01-458-0794
NSN 5950-01-556-7989
NSN 5925-01-093-3388
NSN 5895-00-840-3776