Technical area
Standards for O-Rings
UNI ISO 3601-1 - Fluid systems; sealing devices; O-rings;
part 1: inside diameters, cross-sections, tolerances and size identification
code.
UNI ISO 3601-3 - Fluid systems; Sealing devices;
O-rings; Part 3 : Quality acceptance criteria.
UNI EN
681-1 - Elastomeric seals - Material requirements for pipe joint seals
used in water and drainage applications - Part 1: Vulcanized
rubber.
UNI EN 681-2 - Elastomeric seals - Material
requirements for pipe joints seals used in water and drainage applications -
Part 2: Thermoplastic elastomers.
UNI EN 681-3 -
Elastomeric seals - Material requirements for pipe joints seals used in water
and drainage applications - Part 3: Cellular materials of vulcanized
rubber.
DIN EN 681-4 - Elastomeric seals - Material
requirements for pipe joints seals used in water and drainage applications -
Part 4: Cast polyurethane sealing elements.
UNI EN 549
- Rubber materials for seals and diaphragms for gas appliances and gas
equipment.
BS 1806 (UK) - Specification for dimensions
of toroidal sealing rings ('O'-rings) and their housings.
BS
4518 (UK) - Specification for metric dimensions of toroidal sealing
rings ('O'-rings) and their housings.
NF-T 47 - 501 (F)
- Fluid systems; O-rings; dimensions as in ISO 3601/1.
NF-T 47 -
503 (F) - Fluid systems; O-rings; dimensions as in ISO 3601/1.
UNI EN 3049 - Aerospace series - O-rings, in
fluorocarbon rubber (FKM), low compression set - Hardness 80
IRHD.
UNI EN 3050 - Aerospace series - O-rings, in
fluorocarbon rubber (FKM), low compression set - Technical specification.
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Principal table of the compounds