# Dichtomatik ST457S PTFE Backup Ring - Solid Anti-Extrusion Ring for High-Pressure Sealing - MROSupply.com

***Dichtomatik ST457S PTFE solid backup ring prevents O-ring extrusion in high-pressure static and dynamic sealing applications. Provides reliable anti-extrusion support for O-rings and U-cups in hydraulic and pneumatic systems. PTFE material offers excellent chemical resistance and a wide temperature range from -100°F to +500°F.***



## Product details:

- Catalog number: 75089706
- SKU: 2810580
- Price: ***$104.13*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Dichtomatik](https://www.mrosupply.com/brands/dichtomatik/)
- Category: 
    - [Standard Flat Back-Up Rings](htts://www.mrosupply.com/seals/back-up-rings/standard-flat-back-up-rings/)
    - [Back-Up Rings](htts://www.mrosupply.com/seals/back-up-rings/)
    - [Seals](htts://www.mrosupply.com/seals/)
- Unit of measure: each
- Weight: 0.087 lb
- Technicall support: contact supplier for technical support on 800 328 2840


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product attributes;

  
- Dash Number: 457
  

  
- Domestic/Import: Import
  

  
- I.D.: 14 in
  

  
- Material: PTFE
  

  
- O.D.: 14-1/2 in
  

  
- Temperature Rating: -65 to 500 deg F
  

  
- Thickness: 0.052 in
  

  
- Type: Solid
  

  
- Width: 0.239 in
  


## Product's reviews:
- Wiper - LOOK GOOD
- Seals - Fast delivery, very resonable cost
- Great support of delivery - Thanks! for the help you gave me for the Delivery Next Day!
- My new supplier - Thanks for your help with finding the seals I needed.
You were fast and reasonable with the shipping, The price was also good, your communications before and after the sale was very appreciated again thanks for your help I will be back!!! Steve G