Axially Constrained Kalsi Seal Sizes

Axially Constrained Seals are designed for applications having little or no differential pressure, such as the pressure compensation pistons in oilfield mud motors. Both ends of the seal contact the walls of the gland during operation. This eliminates the need for axial spring load in zero differential pressure conditions.
Axially Constrained Seals are available in two different product series. The 462 series is the current edition of our original axially constrained seal. Although many of the available sizes of 462 series seals have received performance enhancements over the years that are directed at higher temperature operation, all 462 series seals have the same lubricant consumption rate as the original product offering. The 673 series fits in the same groove as the 462 series, but has a greater lubricant consumption rate and better resistance to abrasives in reversing pressure conditions.
Table 1 identifies 462 series HNBR seals that are available from existing tooling. Many of the seals in Table 1 can also be provided in -30 FKM for improved chemical resistance. Table 2 identifies 462 series seals having an updated geometry that has been successfully tested up to 340°F (171°C) with the -30 FKM material. Table 3 identifies 673 series seals. The 673 series seals can be manufactured in HNBR for service up to 302°F (150°C), or in the -30 FKM material for service up to 340°F (171°C). Additional sizes of Axially Constrained Seals can be furnished, subject to a one-time tooling charge to help defray associated engineering, machining, and setup expenses.

  • To download the current rotary seal implementation guidelines (Kalsi Seals Handbook) in PDF format, click here.
  • To download a dxf file of Axially Constrained Kalsi Seal cross-sections for inclusion in assembly drawings, right click here and use the “Save Target As” command.
  • Seal purchase orders should be sent to the attention of Seal Sales via fax number (281-240-0255) or e-mail.

Table 1: 462 series HNBR Axially Constrained Seals

Nominal Inside
Diameter for
-10 and -11 materials*
Seal Part Number* Seal Radial Depth D (inches)
Gland Depth R (inches)**
Gland Width (inches)
+0.003″ -0.000″**
0.980″ 24.89 mm 462-121-* 0.276 0.250 0.316
1.102″ 27.99 mm 462-113-* 0.276 0.250 0.316
1.375″ 34.93 mm 462-97-* 0.276 0.250 0.316
1.625″ 41.28 mm 462-254-* 0.276 0.250 0.316
1.750″ 44.45 mm 462-277-* 0.276 0.250 0.316
1.875″ 47.63 mm 462-295-* 0.276 0.250 0.316
2.000″ 50.80 mm 462-215-* 0.276 0.250 0.316
2.000″ 50.80 mm 462-59-* 0.335 0.309 0.309
2.125″ 53.98 mm 462-267-* 0.276 0.250 0.316
2.250″ 57.15 mm 462-68-* 0.335 0.309 0.309
2.500″ 63.50 mm 462-83-* 0.335 0.309 0.309
2.625″ 66.68 mm 462-308-* 0.335 0.309 0.309
2.750″ 69.85 mm 462-49-* 0.335 0.309 0.309
2.875″ 73.025 mm 462-288-* 0.335 0.309 0.309
3.000″ 76.20 mm 462-310-* 0.335 0.309 0.309
3.172″ 80.57 mm 462-55-* 0.335 0.309 0.309
3.250″ 82.55 mm 462-64-* 0.335 0.309 0.309
3.500″ 88.90 mm 462-111-* 0.276 0.250 0.316
3.500″ 88.90 mm 462-85-* 0.335 0.309 0.309
3.625″ 92.08 mm 462-117-* 0.335 0.309 0.309
3.750″ 95.25 mm 462-62-* 0.335 0.309 0.309
4.250″ 107.95 mm 462-87-* 0.335 0.309 0.309
4.375″ 111.13 mm 462-66-* 0.335 0.309 0.309
4.500″ 114.3 mm 462-115-* 0.335 0.309 0.309
4.750″ 120.65 mm 462-107-* 0.335 0.309 0.309
5.000″ 127.00 mm 462-103-* 0.335 0.309 0.309
5.118″ 130.00 mm 462-284-* 0.335 0.309 0.309
5.500″ 139.7 mm 462-109-* 0.335 0.309 0.309
5.750″ 146.05 mm 462-198-* 0.335 0.309 0.309
6.250″ 158.75 mm 462-237-* 0.335 0.309 0.309
6.299″ 160.00 mm 462-286-* 0.335 0.309 0.309
7.250″ 184.15 mm 462-119-* 0.335 0.309 0.309
7.750″ 196.85 mm 462-256-* 0.335 0.309 0.309
8.250″ 209.55 mm 462-282-* 0.335 0.309 0.309
9.000″ 228.60 mm 462-280-* 0.335 0.309 0.309

* The complete seal part number consists of the number given in the table plus the material dash number. Actual diameter varies as a function of material selected. New tooling may be required for certain materials.
** For gland details, see Chapter D5 of the Kalsi Seals Handbook.

Table 2: 462 series seals made from -30 FKM, for up to 340°F (171°C) service

Nominal Inside
Diameter
Seal Part Number Seal Radial Depth D (inches)
Gland Depth R (inches)**
Gland Width (inches)
+0.003″ -0.000″**
2.625 66.68 mm 462-308-30 0.335″ 0.309″ 0.309″
2.750 69.85 mm 462-49-30 0.335″ 0.309″ 0.309″
3.000 76.20 mm 462-310-30 0.335″ 0.309″ 0.309″
3.500 88.90 mm 462-85-30 0.335″ 0.309″ 0.309″
3.750 85.25 mm 462-62-30 0.335″ 0.309″ 0.309″
4.500 114.3 mm 462-115-30 0.335″ 0.309″ 0.309″
4.750 120.65 mm 462-107-30 0.335″ 0.309″ 0.309″
5.750 146.06 mm 462-198-30 0.335″ 0.309″ 0.309″

** For gland details, see Chapter D5 of the Kalsi Seals Handbook.

Table 3: 673 series Axially Constrained Seals

Nominal Inside
Diameter for
-10 and -11 materials*
Seal Part Number* Seal Radial Depth D (inches)
Gland Depth R (inches)**
Gland Width (inches)
+0.003″ -0.000″**
2.750″ 69.85 mm 673-1-* 0.335 0.309 0.309
4.500″ 114.30 mm 673-8-* 0.335 0.309 0.309

* The complete seal part number consists of the number given in the table plus the material dash number. Actual diameter varies as a function of material selected. New tooling may be required for certain materials.
**  For gland details, see Chapter D5 of the Kalsi Seals Handbook.

 

Updated: June 6, 2016

0.335″

 

Kalsi Seals are offered for sale under the terms and conditions of the “Offer of Sale” that is included in the current revision of the Kalsi Seals Handbook.