To prevent damage to the German standard DIN3869 twisted rubber ring import ed, the design should note the following 1) German import ed rubber ring mounting groove concentricity of size, should be easy to process and does not produce distortions in two aspects to be considered. 2) Import ed rubber ring section size should be uniform, and at each installation site should be fully applied in the sealing oil or grease. Sometimes you can use the felt impregnated with lubricating oil refueling device. 3) increase the cross-sectional diameter rubber ring import ed cross-sectional diameter of the O-ring seals for use should generally be greater than the static seal with O-ring; In addition, the import ed rubber ring should be used to avoid the large-diameter piston seal. 4) at low pressure also distorting damage, protection ring seals may be used. ED seals basic profiles: German import ed solid Ante circle for many manufacturers of industrial seals in one, as pipe fittings, hydraulic plug, transition joints and other special seals pneumatic joints than traditional O-ring seal better. This elastomeric seal used as an axial static seal, used in the oil port and a screw thread ends, the section will remain almost constant at high pressure. DIN3869 German import ed circle contrast advantages: a small section of the mechanical deformation during pressure cycling is no relative movement maintain excellent long-term sealing performance operating pressures up to 60Mpa import ed rubber ring commonly used materials: nitrile rubber (NBR) FKM (VITON) three Ethylene-propylene rubber (EPDM) silicone rubber (VMQ) chloroprene rubber (CR) styrene-butadiene rubber (SBR) hydrogenated nitrile (HNBR) Ante solid manufacturers used imported ed rubber ring size table SIZE Imperial Thread Size 8 - M8 * 1.0 6.5 * 9.9 * 1.0 10 G1 / 8A M10 * 1.0 8.4x11.9x1.0 12 - M12 * 1.5 9.8x14.4x1.5 14 G1 / 4A M14 * 1.5 11.6x16.5x1.5 16 - M16 * 1.5 13.8x18.9x1.5 17 G3 / 8A G3 / 8 "* 19 14.7x18.9x1.5 18 - M18 * 1.5 15.7x20.9x1.5 20 - M20 * 1.5 17.8x22.9x1.5 21 G1 / 2A G1 / 2 "* 14 18.5x23.9x1.5 22 - M22 * 1.5 19.6x24.3x1.5 24 5/8 M24 * 1.5 21.8 * 26.9 * 1.5 26 G3 / 4A M26 * 1.5 23.9x29.2x1.5 27 G3 / 4A M27 * 2.0 23.9x29.2x1.5 33 G1A M33 * 2.0 29.7x35.7x2.0 42 G1-1 / 4 M42 * 2.0 38.8x45.8x2.0 48 G1-1 / 2 M48 * 2.0 44.7x50. 7x2.0 60 2 M60 * 2.0 56.5 * 66.5 * 4.0 ed rubber ring is mainly imported from Germany, in a commonly used rectangular grooves and chamfering tank use, but some mounted dovetail, partial rectangular ducts shaped grooves use . Solid Sealing Technology Co., Ltd. Andrew DIN3869 import ed rubber ring can be used alone, it can also be used with other non-rubber seal combination. Currently, imports of rubber with a circular cross section of ed rubber ring is widely used, it demands a seal.