Parker prädifa piston T-seal

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The prädifa T-Seal is designed for installation in standard commercial 0-ring grooves. Designs should allow for proper lead-in angle (identical to those specified for 0-rings). Due attention should also be given the chamfering and/ or recessing of shoulders, ports, and threads, which might damage the seal in installation or operation. Surface finish should be held to 32 RMS maximum in grooves, and 6-16 RMS on dynamic surfaces against which the seal is to operate.

Groove corners at B diameter may have .030 maximum radius. The other groove corners may be rounded .005 max,  Groove radial walls may be relieved 5° maximum for ease of machining.  The T-seal is intended for use as a single seal. Multiple installations tend to produce pressure lock with resultant reduced seal life. In the rather unusual cases where multiple seals are called for, venting should be provided between seals.

ITEM NUMBER OD ID W BORE D. GROOVE D. GROOVE L.
TP001    3/8    3/16    3/32 .375 =.001 .190 -r 002 – 000 .150- 005 -000
TP002    7/16    1/4    3/32 .437 .252 .150
TP003    1/2    5/16    3/32 .500 .315 150
TP004    9/16    5/16    1/8 .5625 .317 .185
TP005    5/8    3/8    1/8 .625 .380 .185
TP006   11/26    7/16    1/8 .687 .442 .185
TP007    3/4    1/2    1/8 .750 .505 .185
TP008   13/16    9/16    1/8 .812 .567 .185
TP009    7/8    5/8    1/8 .875 .630 .185
TP010   15/16   11/16    1/8 .937 .692 .185
TPO11 1    3/4    1/8 1.001 .756 .185
TP012 1   1/16   13/16    1/8 1.063 .818 .185
TP013 1   1/8    7/8    1/8 1.126 .881 .185
TP014 1   3/16   15/16    1/8 1.188 .943 .185
TP015 1   1/4 1    1/8 1.251 1.006 .185
TP016 1   5/16 1  11/16    1/8 1.313 1.068 .185
TP017 1   3/8 1   1/8    1/8 1.376 1.131 .185
TP018 1   7/16 1   3/16    1/8 1.438 1.193 .185
TP019 1   1/2 1   1/4    1/8 1.501 1.256 .185
TP020 1   9/16 1   5/16    1/8 1.563 1.318 .185
TP021 1   5/8 1   3/8    1/8 1.626 1.381 .185
TP022 1   3/4 1   1/2    1/8 1.751 1.506 .185
TP023 1   7/8 1   1/2    1/8 1.876 1.502 .280
TP024 2 1   5/8    3/16 2.001 1.627 .280
TP025 2   1/8 1   3/4    3/16 2.126 1.752 .280
TP026 2   1/4 1   7/8    3/16 2.251 1.877 .280
TP.027 2   3/8 2    3/16 2.376 2.002 .280
TP028 2   1/2 2   1/8    3/16 2.501 2.127 .280
TP029 2   5/8 2   1/4    3/16 2.626 2.252 .280
TP030 2   3/4 2   3/8    3/16 2.751 -= .002 2.377 + .003-.001 .280
TP031 2   7/8 2   1/2    3/16 2.876 2.502 .280
TP032 3 2   5/8    3/16 3.001 2.627 .280
TP033 3   1/8 2   3/4    3/16 3.126 2.752 .280
TP034 3   1/4 2   7/8    3/16 3.251 2.877 .280
TP035 3   1/2 3   1/8    3/16 3.502 3.128 .280
TP036 3   5/8 3   1/4    3/16 3.627±.002 3.253+.003-.001 280-1-.005-.001
TP037 3   3/4 3   3/8    3/16 3.752 3.378 .280
TP038 3   7/8 3   1/2    3/16 3.877 3.503 280
TP039 4 3   5/8    3/16 4.002 3.628 .280
TP040 4   1/8 3   3/4    3/16 4.127 3.753 .280
TP041 4 1/4 3   7/8    3/16 4.252 3.878 .280
TP042 4 3/8 4    3/16 4.377 4.003 .280
TP043 4 1/2 4   1/8    3/16 4.502 4.128 .280
TP044 4 5/8 4   1/4    3/16 4.627 4.253 .280
TP045 4 3/4 4   3/8    3/16 4.752 4.378 .280
TP046 4 7/8 4   1/2    3/16 4.877 4.503 .280
TP047 5 4   5/8    3/16 5.003 4.629 .280
TP048 5 1/8 4   5/8    1/4 5.128 4.649 .366
TP049 5 1/4 4   3/4    1/4 5.253 4.774 .366
TP050 5 3/8 4   7/8    1/4 5.378 4.889 .366
TP051 5 1/2 5    1/4 5.503 5.024 .366
TP052 5 5/8 5   1/8    1/4 5.628 5.149 .366
TP053 5 3/4 5   1/4    1/4 5.753 5.274 .366
TP054 5 7/8 5   3/8    1/4 5.878 5.399 .366
TP055 6 5   1/2    1/4 6.003 5.524 .366
TP056 6 1/8 5   5/8    1/4 6.128 5.649 .366
TP057 6 1/4 5   3/4    1/4 6.253 5.774 .366
1P058 6 1/2 6    1/4 6.503 -± .003 6.024+.004-.002 .366
TP059 6 3/4 6   1/4    1/4 6.753 6.274 .366
TP060 7 6   1/2    1/4 7.003 6.524 .366
TP061 7 1/4 6   3/4    1/4 7.253 6.774 .366
TP062 7 1/2 7    1/4 7.503 7.024 .366
TP063 7 3/4 7   1/4    1/4 7.753 7.274 .366
TP064 8 7   1/2    1/4 8.003 7.524 .366
TP065 8 1/4 7   3/4    1/4 8.253 7.774 .366
TP066 8 1/2 8    1/4 8.503 8.024 .366
TP067 9 8   1/2    1/4 9.003 8.524 .366
TP068 9 1/2 9    1/4 9.503 9.024 .366
TP069 10 9   1/2    1/4 10.003 9.524 .366
TP070 10 1/2 10    1/4 10.503 10.024 .366
TP071 11 10   1/2    1/4 11.003 10.524 .366
TP072 11 1/2 11    1/4 11.503 11.021 .366
TP073 12 11   1/2    1/4 12.003 11.524 .366
TP077 14 13   1/2    1/4 14.003 13.524 366

 

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Parker

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