#Rings <br> <br>[a]https%3A%2F%2Fwww.sanpingmachinery.com%2Fproducts%2Fbrt-back-up-ring%2F[/a] <br> <br>BRT PTFE Back Up Rings Fits Excavator <br>BRT type PTFE+copper powder material Seal ring back support ring. <br> <br>BRT back up ring seal series materials are: PTFE-polytetrafluoroethylene material and copper powder polytetrafluoroethylene. <br> <br>The addition of copper powder PTFE has higher wear resistance and hardness, and the resistance to pressure is enhanced. <br> <br>Advantages of BRT Back Up Ring PTFE Fits Excavator <br>d D t d D t <br>50 60 3 80 95 3 <br>50 63 3 80 100 3 <br>50 65 3 85 100 3 <br>50 70 3 85 105 3 <br>60 70 3 90 105 3 <br>60 73 3 90 110 3 <br>60 75 3 95 110 3 <br>60 80 3 95 115 3 <br>65 75 3 100 115 3 <br>65 78 3 100 120 3 <br>65 80 3 105 120 3 <br>70 80 3 105 125 3 <br>70 83 3 110 125 3 <br>70 85 3 110 130 3 <br>70 90 3 115 130 3 <br>75 85 3 115 135 3 <br>75 88 3 120 135 3 <br>75 90 3 120 140 3 <br>75 95 3 130 145 3 <br>80 93 3 130 150 3

#Backup <br>[a]https%3A%2F%2Fwww.sanpingmachinery.com%2Fproducts%2Fback-up-ring%2F[/a] <br>Sanping Back Up Ring <br>China buck up ring seal is a thin ring designed to prevent the O-ring from extruding under pressure. They are installed in the gland between the seal and the gap to provide zero gap. <br> <br>Types of Backup Ring Seals <br>BRT Back Up Ring Fits Excavator <br>N4W Back Up Ring Fits Excavator <br> <br>China Back Up Ring Advantages <br>1. The China back up rings are effective in preventing the O ring backup ring from being pinched, which can happen when there is a significant difference between the inside diameter of the gland and the outside diameter of the O-ring backup ring. <br> <br>2. The seal backup rings help to reduce the cost of the O-ring backup ring since they reduce the amount of material needed for the O-ring backup ring. <br> <br>3. The seal backup rings can be used to help increase the temperature resistance of the O-ring backup ring, since they can act as a heat sink. <br> <br>Back Up Ring FAQs <br>What is the Purpose of a Backup Ring? <br>An element used to safeguard a seal in a dynamic application is a backup ring. It is made to allow for relative mobility while preventing the seal from extending into the space between two mating components. It is typically employed in dynamic high pressure applications. <br> <br>How Do Backup Rings Work? <br>Backup rings are typically used in static seals like O-rings. They are used to provide additional support to the seal, helping to ensure that the seal is properly seated in the groove. Backup rings are commonly made of hard plastics like PTFE and are designed to fit into a groove that is slightly larger than the O-ring. When the O-ring is compressed into the groove, the backup ring prevents it from expanding too far and provides the necessary support for the seal.

#Piston <br> <br>[a]https%3A%2F%2Fwww.sanpingmachinery.com%2Fproducts%2Fspgw-piston-seal%2F[/a] <br> <br>SPGW Piston Seal Fits Excavator <br>SPGW, one of important parts for machines, is a heavy-duty two-way piston sealing ring widely used in high-pressure conditions. It has excellent anti-leakage, anti-extrusion and wear resistance properties. It is especially suitable for long-stroke conditions, and for a wide range of fluids and high temperature occasions, and can be adapted to larger piston gaps. It uses a unique sealing material and geometric shape. It is a polytetraethylene combined sealing ring made of elastomer, and is superimposed to form a compact structure with good performance and can be installed in a single piston groove. Its geometry makes it have overall stability, wear resistance, good sealing, low friction and long life without maintenance. <br> <br>No. Nominal size of Packing and Housing Dimensions <br> D d h H C <br>50 50 36 8.5 9 4 <br>55 55 41 8.5 9 4 <br>60 60 46 8.5 9 4 <br>63 63 48 10.5 11 5 <br>65 65 50 10.5 11 5 <br>70 70 55 10.5 11 5 <br>75 75 60 10.5 11 5 <br>80 80 65 10.5 11 5 <br>85 85 70 10.5 11 5 <br>90 90 75 10.5 11 5 <br>95 95 80 10.5 11 5 <br>100 100 85 12 12.5 5 <br>105 105 90 12 12.5 5 <br>110 110 95 12 12.5 5 <br>115 115 100 12 12.5 6.5 <br>120 120 105 12 12.5 6.5 <br>125 125 102 15.5 16 6.5 <br>130 130 107 15.5 16 6.5 <br>135 135 112 15.5 16 6.5 <br>140 140 117 15.5 16 6.5 <br>145 145 122 15.5 16 6.5 <br>150 150 127 15.5 16 6.5 <br>155 155 132 15.5 16 6.5 <br>160 160 137 15.5 16 6.5 <br>165 165 142 15.5 16 6.5 <br>170 170 147 15.5 16 6.5 <br>175 175 152 15.5 16 6.5 <br>180 180 157 15.5 16 6.5 <br>185 185 162 15.5 16 6.5 <br>190 190 167 15.5 16 6.5 <br>195 195 172 15.5 16 6.5 <br>200 200 177 15.5 16 6.5 <br>205 205 182 15.5 16 6.5 <br>210 210 187 15.5 16 6.5 <br>215 215 192 15.5 16 6.5 <br>220 220 197 15.5 16 6.5 <br>225 225 202 15.5 16 6.5 <br>230 230 207 15.5 16 6.5 <br>240 240 217 17 17.5 7.5 <br>250 250 222 17 17.5 7.5 <br>260 260 232 17 17.5 7.5 <br>270 270 242 17 17.5 7.5 <br>280 280 252 17 17.5 7.5 <br>300 300 272 17 17.5 7.5