Introduction of TC skeleton oil seals imported by FKM
Skeleton oil seal (OIL) is a typical representative of oil seal. Generally speaking, oil seal refers to skeleton oil seal. The function of oil seal is to isolate the parts that need lubrication from the output parts in the transmission parts, so as not to let the lubricating oil leak. The skeleton, like the reinforcing bars in Tung concrete members, plays a reinforcing role and keeps the shape and tension of the oil seal. According to the structure, it can be divided into single lip skeleton oil seal and double lip skeleton oil seal. The accessory lip of lip skeleton oil seal acts as a dust-proof function to prevent dust and impurities from entering the inside of the machine. According to the skeleton type, it can be divided into inner skeleton oil seal, outer skeleton oil seal and assembly oil seal. According to working conditions, it can be divided into rotary skeleton oil seal and reciprocating skeleton oil seal. Used for crankshaft of gas-oil engine, crankshaft of diesel engine, gearbox, differential, shock absorber, engine, axle and other parts.
2. Introduction of imported TC skeleton oil seal and VITON material and performance of FKM
1) Main Performance
Fluororubber is a copolymer of ethyl fluoride and hexafluoropropyl with a specific gravity of 1.85. According to its molecular structure and fluorine content, the chemical resistance and low temperature resistance of fluorine rubber O-ring are also different. Fluororubber is famous for its flame retardancy (off-fire self-extinguishing), excellent air tightness (vacuum up to 1.33X10-7~1.33X10-8pa), ozone resistance, weather resistance, good aging resistance and extensive chemical resistance. DuPont VITON products made by organic peroxide vulcanization have more excellent properties.
2) Temperature range
- 40 ~240 C
3) Hardness Range of VITONO Ring
Shaw's A50 to A90 degrees
4) Product color of FKM material
Black and Brown are the main colors. Other colors such as green, white, brown-red, yellow and blue can also be customized.
3. Specification of imported O-ring for high temperature tetrafluoro
Thickness: 1 (mm) ~10 (mm); Inner diameter: 10 (mm) ~2000 (mm); Outer diameter: 12 (mm) ~3000 (mm);
Precision O-ring has smooth surface, no needle-eye, no hairy edge, and the precision can reach +/-0.03mm to +/-0.08mm.
Imported High Temperature Resistant O-ring
High temperature resistant imported O-rings are mainly used for sealing high temperature requirements of electronic appliances, machinery and equipment, boiler manufacturing, automobiles, bearings, pumps, cylinders, idlers, water pipes, chemical pipelines, valves and other industries;
There are three main types of imported high temperature resistant O-rings: fluorine rubber O-rings, silica gel O-rings and tetrafluoro O-rings.
1. Fluorine rubber O-ring: long-term use of high temperature in 220 degrees, the limit of high temperature 240 degrees.
2. Silica gel O-ring: Swimming for a long time using high temperature and fluorine gel, but it is more prominent is its low temperature resistance, the limit can reach - 60 degrees.
3. Tetrafluoride high temperature import O-ring: high temperature resistance is generally 250 degrees, low temperature performance excellent limit can reach - 190 degrees, and can achieve sudden cooling and sudden heating.
High temperature resistant fluorine rubber seals are suitable for dynamic seals, relatively speaking, silica gel is more wear-resistant, suitable for weak acid and alkali, and its corrosion resistance is comparable to that of silica gel.
High temperature resistant silica gel seals are suitable for static seals. They play an important role in the bonding of some products. They have excellent biological inertia and good corrosion resistance.
Where high temperature tetrafluoro seals go, do not want the elasticity of fluorosilica gel, such seals are more suitable for some high wear resistance, because its own product surface is generally more suitable for making guide rings, wear-resistant rings, retaining rings, U-ring and other high-pressure, wear-resistant, high and low temperature resistant environment.