Technical Bulletins

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Tuesday, 24 July 2012 09:03

Gaskets

Aquatherm has recently decided to no longer include an EPDM ring gasket with each of the flange adapters. The reason for this decision is that by including a gasket there is an implication that it would be appropriate for all different applications and fluids, when it is not. There are applications where the gasket material (EPDM, SBR, NBR, PFE, PTFE) or configuration (ring vs. full face) may require alternate gaskets.

During this transition, product orders may result in the receipt of some flange adapters with gaskets and some without. If included, and assuming the EPDM ring gasket is appropriate for the particular application, these gaskets may be used.

Aquatherm recommends using a full face rubber (black EPDM or red SBR) gasket with its flanges. Viton® gaskets may also be used if needed for chemical resistance. The bolt and bolt torque do not change with these different gasket materials. Other materials may require different bolt torque. The gasket should have an inside diameter consistent with the ID of the flange adapter. For lower pressure systems, and smaller diameters (4” and down), ring gaskets may be used but there is the possibility of blow-outs during pressure testing. Ring gaskets are also more susceptible to leaks if the flanges and connected piping are not aligned properly during installation. The gasket should have an inside diameter consistent with the ID of the flange adapter.

It is important to note that any gasket material used, whether purchased from Aquatherm or another source, is not covered under the Aquatherm warranty program.

Further down the page please find a Flange Adapter Table listing the dimensions of the various flange adapters available from Aquatherm. This table may be used in selecting the proper size gasket for various sized flange adapters.

Also, please find a short listing of some alternative gasket manufacturers. These manufacturers have a large variety of different gaskets and materials available. Please contact the individual manufacturers for specific details concerning price and availability.

Flange adapter table
Flange adapterpart no.Pipe SDRDimensionND - OD (in - mm)Face ID (in)Face ID (mm)Face OD (in)Face OD (mm)
115512 11 1" - 32 mm 1.01 26 2.68 68
115514 11 1 1/4" - 40 mm 1.33 34 3.07 78
115516 11 1 1/2" - 50 mm 1.73 44 3.46 88
115518 11 2" - 63 mm 2.20 56 4.02 102
 115520 11 2 1/2" - 75 mm  2.76  70  4.80  122
 115522 11 3" - 90 mm  3.19  81  5.43  138
 115524 11 3 1/2" - 110 mm  4.05  102  6.22  158
 115526 11 4" - 125 mm  4.02  102  6.22  158
             
2515530 17.6 6" - 160 mm  6.18  157  8.34  212
 115531 11 6" - 160 mm  6.02  153  8.34  212
115530 7.4 6" - 160 mm  6.10  155  8.34  212
             
2515534 17.6 8" - 200 mm 7.64  194  10.55  268
115535 11 8" - 200 mm  7.40  188  10.55  268
115534 7.4 8" - 200 mm 7.48  190  10.55  268
             
2515538 17.6 10" - 250 mm 9.45  240  12.60  320
15539 11 10" - 250 mm 9.45  240  12.60  320
 15538 7.4 10" - 250 mm 9.25  235  12.60  320
             
 2515542 17.6 12" - 315 mm  10.98  279  14.57  370
 15543 11 12" - 315 mm  10.12  257  14.57  370
             
2515544 17.6 14" - 355 mm  12.36  314  17.01  432
15545 11 14" - 355 mm  11.42  290  17.01  432
             
2515546 17.6 16" - 400 mm  13.94  354  19.06  484
             
2515548 17.6 18" - 450 mm 15.67  398  23.07  586
             
2515550 17.6 20" - 500 mm  17.44  443  23.03  585
             
2515552 17.6 22" - 560 mm  19.53  496  26.97 685
             
2515554 17.6 24" - 630 mm  21.97  558  27.09  688

The following are suppliers of alternative gasket materials:

Ames Rubber Manufacturing Corporation
19 Ames Boulevard
Hamburg, New Jersey 07419-1514
973-827-9101
http://www.amesrubber.com

CTG
8819 Emmott Rd.
PO Box 40940
Houston, TX 77240-0940
800-299-1685
http://www.ctgasket.com

U.S Rubber Supply Co.
238-A N. 9th Street
Brooklyn, NY 1
1211
718-782-7888
http://www.usrubberco.com

Standard Washer & Mat, Inc.
299 Progress Drive\PO Box 368
Manchester, CT 06040
860-643-5125
http://www.standardwasher.com
Ryan Herco Flow Solutions
PO Box 588
Burbank, CA 91503-0588
818-841-1141
http://www.ryanherco.com
Valley Rubber
2170 S 3600 W
Salt Lake City, UT 84119
801-972-6603
Cain Bolt & Gasket, Inc.
7724 7th Avenue South
Seattle, WA 98108
800-340-1891
http://cainboltandgasket.com
 

Ames Rubber Manufacturing Corporation
19 Ames Boulevard
Hamburg, New Jersey 07419-1514
973-827-9101
http://www.amesrubber.com

CTG
8819 Emmott Rd.
PO Box 40940
Houston, TX 77240-0940
800-299-1685
http://www.ctgasket.com

U.S Rubber Supply Co.
238-A N. 9th Street
Brooklyn, NY 1
1211
718-782-7888
http://www.usrubberco.com

Standard Washer & Mat, Inc.
299 Progress Drive\PO Box 368
Manchester, CT 06040
860-643-5125
http://www.standardwasher.com
Ryan Herco Flow Solutions
PO Box 588
Burbank, CA 91503-0588
818-841-1141
http://www.ryanherco.com
Valley Rubber
2170 S 3600 W
Salt Lake City, UT 84119
801-972-6603
Cain Bolt & Gasket, Inc.
7724 7th Avenue South
Seattle, WA 98108
800-340-1891
http://cainboltandgasket.com
 

PDF Version: 201207A-AQTTB-Gaskets.pdf