Nitrile rubber X-Ring _NBR star star ring ring _

One. Star-ring Overview: Star ring four lip seal, shaped like X, so-called X-ring. It is based on the O-ring performance has been improved and enhanced, it can replace most of the O-ring applications. Second, how to select the star ring? If the shaft diameter of the hole is known, the basis of the following criteria to select the appropriate shaped ring; 1. static seals or reciprocating linear motion: hole sealed: Star ring inner diameter of the trench should adapt, or less than ditch groove outer diameter of about 2%. Because the pre-pressing force generated by the pre-compression can effectively prevent distortion l on the star seal. Shaft seals: the outer diameter of the star ring inner diameter equal to or greater than the axis of the outer diameter of the appropriate size of about 0.2 ~ 0.3mm can be large relative to the shaft of one percent. Thereby, the sealing ring can be more easily installed, while for longer service life. Third, use star ring: the star ring can completely replace the O-ring, a non-circular cross-section, avoid scrolling on reciprocation. In terms of performance on the basis of O-rings made to improve and enhance their standard size fully with the US standard AS568 O-ring exactly four star seals Advantages: - reciprocating motion does not distort roll - than the O-ring radial stress required small, friction long life - the star ring sectional pressure distribution, sealing the better - since the parting line is disposed between the two lips, and therefore will not affect the sealing effect burrs - in Lubrication cavity formed between the sealing lip, improves startup condition five, star-ring - our outstanding advantages: 1. Star-ring generally dominated American standard specifications, so that the complete specifications. 2. To order, but also can be tailored to your star-ring. 3. Stock: NBR generally have inventory, you can for your timely delivery. Fluorine rubber, silicone, EPDM, also have large inventories. 4. rubber material: We select all imported glue material, quality can be guaranteed. 5. Price: We can do it at the lowest price of imported products in six rubber material Introduction: nitrile rubber X-Ring-ring _ _NBR star star ring made of acrylonitrile and butadiene polymerization, general use temperature range of -40 ~ 120 ℃. NBR rubber is currently one of the most commonly used rubber seals and O-rings. Pros: With good resistance to oil, resistant to water, solvents and anti-high-pressure oil properties. With good compression distortion, wear and elongation force. Disadvantages: not suitable for use in polar solvents being, for example, ketones, ozone, nitro hydrocarbons, chloroform. For the production of the fuel tank, oil tank and oil-based hydraulic oil, gasoline, water, silicone grease, silicone, diester-based lubricants, hydraulic oil, glycol-based fluid medium used rubber parts, especially the sealing parts. It can be said is the most widely used and lowest cost rubber seal. Nitrile rubber (NBR) 120 degree heat and oil resistance, abrasion resistance EPDM rubber (EPDM) 150 degree heat resistance, chemical resistance, no oil silicone material (SIL) Heat oil to 220 degrees in general, do not wear fluorine rubber (FKM)) 200 degree heat and oil resistance, wear resistance, chemical resistance of polyurethane (PU) Heat oil to 120 degrees, wear resistance Last Update 2014-7-9 Information Number: ad64130082