Our company is ready to produce sealing rings of fluoroplast-4 intended for sealing of threaded couplings of well casing and tubing strings used in the operation of oil, gas and other wells. Ring types and dimensions (mm). Ring types, designs and dimensions should coincide with the ones given in Figure 1 and in Table 1.

Pipe nominal diameter (DN), mm Ring outer diameter (Дк), mm Ring wall thickness (В), mm Ring height (Н), mm
Nominal value Maximum deviation Nominal value Maximum deviation Nominal value Maximum deviation
For well casing withОТТМandОТТГ-type threads
114 114.73  0.38 2.54 plus 0.25 3.96 plus 0.38
127 127.76
140 139.73
146 146.03
168 168.03
178 177.33
194 192.93
219 218.03
245 243.43
273 272.03
For well casing with buttress-type threads
114 115.85  0.38 2.54 plus 0.25 3.96 plus 0.38
127 128.09
140 140.79
146 147.12
168 169.37
178 178.79
194 194.49
219 219.89
245 245.29
273 273.89
324 324.25

Pipe nominal diameter (DN), mm Ring outer diameter (Дк), mm Ring wall thickness (В), mm Ring height (Н), mm
Nominal value Maximum deviation Nominal value Maximum deviation Nominal value Maximum deviation
For non-upset well tubing
60 61.26 ± 0.19 2.03 plus 0.38 3.96 plus 0.38
73 73.96 ± 0.19 2.03 plus 0.38 3.96 plus 0.38
89 89.84 ± 0.19 2.03 plus 0.38 3.96 plus 0.38
101 102.77 ± 0.19 2.54 plus 0.38 3.96 plus 0.38
114 115.47 ± 0.19 2.54 plus 0.38 3.96 plus 0.38

Note: on agreement between the manufacturer and the consumer, manufacturing of rings having other dimensions is admitted.