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2. EPDM rubber - Wikipedia

   en.wikipedia.org/wiki/EPDM_rubber

   EPDM rubber (ethylene propylene diene monomer rubber) [1] [2] [3] is a type of synthetic rubber that is used in many applications. EPDM is an M-Class rubber under ASTM standard D-1418; the M class comprises elastomers with a saturated polyethylene chain (the M deriving from the more correct term polymethylene).

3. North American Fire Hose Coupler Incompatibilities - Wikipedia

   en.wikipedia.org/wiki/North_American_Fire_Hose...

   At its annual convention at Dallas, TX, the NFPA formally adopted a standard with 2 + 1 ⁄ 2-inch hose with 7.5 threads per inch as the primary standard, with additional sizes of 3 and 3.5 inches (each with 6 threads per inch) and a 4.5 inch coupling with 4 threads per inch, with the fire hydrant standard specifying one 4.5 inch port and two 2 ...

4. Gasket - Wikipedia

   en.wikipedia.org/wiki/Gasket

   Internal pressure acts upon the faces of the V, forcing the gasket to seal against the flange faces. Most spiral wound gasket applications will use two standard gasket thicknesses: 1/8 inch and 3/16 inch. With 1/8 inch thick gaskets, compression to a 0.100 inch thickness is recommended. For 3/16 inches, compress to a 0.13 inch thickness.

5. The best walk-in tubs, according to mobility experts - AOL

   www.aol.com/lifestyle/best-walk-in-tubs...

   The door of a walk-in tub is designed with a watertight seal to prevent leakage. However, if the tub is poorly designed or installed incorrectly, there is a chance that it might leak. Leaks can ...

6. Fire door - Wikipedia

   en.wikipedia.org/wiki/Fire_door

   Fire-resistance rated door, with wire mesh glass vision panel Industrial grade fire door rated to hydrocarbon curve and blast resistance Double fire door immediately after 3-hour fire test inside a 4-hour rated Durasteel wall Double fire door after 3-hour fire test in a 4-hour Durasteel wall, during successful 45PSI (3.1 bar) hose stream test leading to a UL Listing [1]

7. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.