Precision Associates, Inc.
Precision Associates, Inc.
3800 North Washington Ave.
Minneapolis, MN 55412-2142
Toll Free: 1-800-394-6590
Local: +1 612-333-7464
Sales: +1 612-334-9190
Fax: 612-342-2417
Email: [email protected]
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PAI Kurv-Bak™ hard rubber back-up rings can be made in a variety of materials to help prevent early seal failure at higher pressures.
Kurv-Baks
Unit of Measure
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Item #

Nominal C/S (inches)

Nominal I.D. (inches)

Nominal O.D. (inches)

Thickness (Inches)

I.D. (inches)

O.D. (Inches)

888-404 N/A 1/4 N/A 1 7/8 N/A 2 3/8 N/A .117 N/A 1.909 N/A 2.381
888-405 N/A 1/4 N/A 2 N/A 2 1/2 N/A .117 N/A 2.034 N/A 2.506
888-409 N/A 1/4 N/A 2 1/2 N/A 3 N/A .117 N/A 2.534 N/A 3.006
888-413 N/A 1/4 N/A 3 N/A 3 1/2 N/A .117 N/A 3.034 N/A 3.506
888-415 N/A 1/4 N/A 3 1/4 N/A 3 3/4 N/A .117 N/A 3.294 N/A 3.766
888-417 N/A 1/4 N/A 3 1/2 N/A 4 N/A .117 N/A 3.544 N/A 4.016
888-421 N/A 1/4 N/A 4 N/A 4 1/2 N/A .117 N/A 4.044 N/A 4.516
888-422 N/A 1/4 N/A 4 1/8 N/A 4 5/8 N/A .117 N/A 4.169 N/A 4.641
888-423 N/A 1/4 N/A 4 1/4 N/A 4 3/4 N/A .117 N/A 4.294 N/A 4.766
888-424 N/A 1/4 N/A 4 3/8 N/A 4 7/8 N/A .117 N/A 4.419 N/A 4.891
888-427 N/A 1/4 N/A 4 3/4 N/A 5 1/4 N/A .117 N/A 4.801 N/A 5.273
888-428 N/A 1/4 N/A 4 7/8 N/A 5 3/8 N/A .117 N/A 4.926 N/A 5.398
888-425 N/A 1/4 N/A 4.5 N/A 5 N/A .117 N/A 4.551 N/A 5.023
888-429 N/A 1/4 N/A 5 N/A 5 1/2 N/A .117 N/A 5.051 N/A 5.523
888-430 N/A 1/4 N/A 5 1/8 N/A 5 5/8 N/A .117 N/A 5.176 N/A 5.648
888-431 N/A 1/4 N/A 5 1/4 N/A 5 3/4 N/A .117 N/A 5.301 N/A 5.773
888-432 N/A 1/4 N/A 5 3/8 N/A 5 7/8 N/A .117 N/A 5.426 N/A 5.898
888-433 N/A 1/4 N/A 5 1/2 N/A 6 N/A .117 N/A 5.551 N/A 6.023
888-426 N/A 1/4 N/A 5 5/8 N/A 5 1/8 N/A .117 N/A 4.676 N/A 5.148
888-434 N/A 1/4 N/A 5 5/8 N/A 6 1/8 N/A .117 N/A 5.676 N/A 6.148
888-435 N/A 1/4 N/A 5 3/4 N/A 6 1/4 N/A .117 N/A 5.801 N/A 6.273
888-436 N/A 1/4 N/A 5 7/8 N/A 6 3/8 N/A .117 N/A 5.926 N/A 6.398
888-437 N/A 1/4 N/A 6 N/A 6 1/2 N/A .117 N/A 6.051 N/A 6.523
888-438 N/A 1/4 N/A 6 1/4 N/A 6 3/4 N/A .117 N/A 6.274 N/A 6.746
888-439 N/A 1/4 N/A 6 1/2 N/A 7 N/A .117 N/A 6.524 N/A 6.996
Unit of Measure
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