Materials that meet FDA and European Directive EC 1935/2004 criteria that are appropriate for food applications include EPDM, NBR, Viton®, and silicone.
As previously mentioned, DuPont (now Chemours) used the Viton brand to market fluorocarbon rubber. O-rings and other molded or extruded parts are frequently made of this synthetic rubber and fluoropolymer elastomer.
O-rings and other molded extruded products frequently employ Viton, a brand of synthetic rubber and fluoropolymer elastomer. DuPont has registered Viton as a trademark; FKM is another common abbreviation for it.
The term Viton, which stands for fluorocarbon o rings, or FKM/FPM for short, is a trademark, similar to that of Hoover or Sellotape. Excellent heat tolerance, resistance to oils, fuels, hydraulic fluids, aromatics, and solvents are all features of this material.
Standard Viton® rubber gaskets may tolerate bleach, but the lead used in their curing process can contaminate drinking water. Following that, lead-free Viton® GF is used to obtain NSF 61 certification. Drinking water systems also use rubber gaskets made of NSF 61 EPDM.piston seals for hydraulic cylinders
Oil-based sealers cover a larger area than water-based sealers, but oil-based sealers dry faster. sealants based on water! Wall sealers are frequently the overlooked part.
Rings composed of a blend of Viton®, FPM, and FKM are colored brown, similar to O-rings.
Teflon is a polymer made of polytetrafluoroethylene (PTFE), whereas Viton is a rubber made of fluoropolymer that resembles PTFE in certain ways but has a different composition.viton oil seal
A lot of O-rings, seals, gaskets, liners, hoses, and diaphragms employ FKM. Four categories-Type A, B, F, and Specialty chemicals-are used to categorize FKM compounds. Types A, B, and F are bisphenol-cured saturated co-or terpolymers of vinylidene fluoride (VF2), tetrafluoroethylene (TFE), and hexafluoropropylene (HFP).oil seal suppliers near me
The application range of these two sealing elements is one of their main differences; oil seals are more resistant to pressure than O rings, which makes them perfect for high-pressure settings like engine parts, while O rings perform better in lower-pressure assemblies like pipelines and valves.