Large diameter thermoplastic seal

Abstract

A seal ring includes a weld and a thermoplastic material. The thermoplastic material has a weld elongation-at-break of at least 3%. The thermoplastic material can have a glass transition temperature of at least 100° C. The thermoplastic material with the weld can have a weld elongation-at-break of at least 3%. The seal ring can have a circumference of at least 0.62 meters. The seal ring can have a coefficient of friction of not greater than 0.45.

1 . A seal ring comprising a weld and comprising a thermoplastic material having a weld elongation-at-break of at least 3%. 
   
   
       2 . The seal ring of  claim 1 , wherein the seal ring has a circumference of at least 0.62 meters. 
   
   
       3 . (canceled) 
   
   
       4 . The seal ring of  claim 1 , wherein the seal ring has a diameter of at least 0.2 meters. 
   
   
       5 . The seal ring of  claim 4 , wherein the diameter is at least 1.3 meters. 
   
   
       6 . (canceled) 
   
   
       7 . The seal ring of  claim 1 , wherein the thermoplastic material is selected from the group consisting of a polyketone, a polyaramid, a polyimide, a polyetherimide, a polyamideimide, a polyphenylene sulfide, a polyphenylene sulfone, a fluoropolymer, a polybenzimidazole, a liquid crystal polymer, a derivation thereof, or a combination thereof. 
   
   
       8 . (canceled) 
   
   
       9 . The seal ring of  claim 7 , wherein the thermoplastic material is a polyketone material selected from the group consisting of polyether ether ketone, polyether ketone, poly ether ketone ketone, a derivation thereof, and a combination thereof. 
   
   
       10 . (canceled) 
   
   
       11 . The seal ring of  claim 1 , wherein the thermoplastic material comprises ultra high molecular weight polyethylene. 
   
   
       12 . The seal ring of  claim 1 , wherein the seal ring has a coefficient of friction of not greater than 0.45. 
   
   
       13 .- 14 . (canceled) 
   
   
       15 . The seal ring of  claim 1 , wherein the thermoplastic material has a melting point of at least 250° C. 
   
   
       16 .- 17 . (canceled) 
   
   
       18 . The seal ring of  claim 1 , wherein the thermoplastic material has a glass transition temperature of at least 100° C. 
   
   
       19 .- 20 . (canceled) 
   
   
       21 . The seal ring of  claim 1 , wherein the thermoplastic material has a tensile strength of at least 3100 psi. 
   
   
       22 .- 23 . (canceled) 
   
   
       24 . The seal ring of  claim 1 , wherein the tensile modulus is at least 100 ksi. 
   
   
       25 .- 26 . (canceled) 
   
   
       27 . The seal ring of  claim 1 , wherein the weld elongation-at-break is at least 5%. 
   
   
       28 . The seal ring of  claim 27 , wherein the weld elongation-at-break is at least 10%. 
   
   
       29 .- 36 . (canceled) 
   
   
       37 . A seal ring having a weld and comprising a thermoplastic material having a glass transition temperature of at least 100° C., the thermoplastic material with the weld having a weld elongation-at-break of at least 3%, the seal ring having a circumference of at least 0.62 meters, the seal ring having a coefficient of friction of not greater than 0.45. 
   
   
       38 .- 39 . (canceled) 
   
   
       40 . The seal ring of  claim 37 , wherein the weld elongation-at-break is at least 5%. 
   
   
       41 .- 47 . (canceled) 
   
   
       48 . A seal ring comprising extruded PEEK material having a weld elongation-at-break of at least 3%, the seal ring having a circumference of at least 1.5 meters. 
   
   
       49 . The seal ring of  claim 48 , wherein the extruded PEEK material is a composite material comprising a filler. 
   
   
       50 .- 53 . (canceled) 
   
   
       54 . The seal ring of  claim 48 , wherein the weld elongation-at-break is at least 5%. 
   
   
       55 .- 57 . (canceled) 
   
   
       58 . The seal ring of  claim 48 , further comprising a weld. 
   
   
       59 . (canceled)