Plastic Lined Kalsi Seals

Plastic Lined Seals have the highest pressure capacity of all of our rotary shaft seals. The plastic liner places a high modulus material at the extrusion gap. This high modulus allows the seal to bridge much higher pressures than an all elastomer seal. Another advantage of our plastic lined rotary seals is that they have lower breakout friction, compared to Kalsi Seals that are constructed entirely from elastomer.

We recommend plastic lined Kalsi Seals as the pressure retaining seal in high-pressure equipment such as washpipe assemblies, side entry cement swivels, hydraulic swivels, and high pressure rotating control devices (RCDs).

Standard Width Plastic Lined Kalsi Seals

Nominal Inside Diameter Seal Part Number* Seal Radial Depth D
Seal Axial Width (inches)
Gland Depth R (inches)**
Gland Width (inches) +0.005″ -0.000″**
EL Wave type EL Wave Quantity
2.750″ 69.85mm 0.335 ±0.005 0.250 0.309″ A 9
10.995″ 279.27mm 680-1-307 0.445 ±0.005 0.300 0.424″ A 35
10.995″ 279.27mm 680-1-308 0.445 ±0.005 0.300 0.424″ A 35

 

Wide Footprint Plastic Lined Kalsi Seals (Lip is 1.5 times wider than standard width)

Nominal Inside Diameter Seal Part Number* Seal Radial Depth D
Seal Axial Width (inches)
Gland Depth R (inches)**
Gland Width (inches) +0.005″ -0.000″**
EL Wave type EL Wave Quantity
10.375″ 263.5 mm 681-1-307 0.450 ±0.005 0.300 0.415 0.355 A 33
10.375″ 263.5 mm 681-1-308 0.450 ±0.005 0.300 0.415 0.355 A 33

 

Extra Wide Plastic lined Seals (Lip is 2.4 times wider than standard width)

Nominal Inside Diameter Seal Part Number* Seal Radial Depth D
Seal Axial Width (inches)
Gland Depth R (inches)**
Gland Width (inches) +0.005″ -0.000″**
EL Wave type EL Wave Quantity
2.750″ 69.85 mm 682-5-303 0.335 ±0.005 0.335 0.309 0.400 A 9
2.750″ 69.85 mm 682-5-307 0.335 ±0.005 0.335 0.309 0.400 A 9
2.750″ 69.85 mm 682-5-308 0.335 ±0.005 0.335 0.309 0.400 A 9
4.500″ 114.30 mm 682-3-303 0.415 ±0.005 0.335 0.384 0.400 A 14
8.434″ 214.22 mm 682-23-303 0.415 ±0.005 0.335 0.389 0.400 A 27
8.434″ 214.22 mm 682-23-318 0.415 ±0.005 0.335 0.389 0.400 A 27
10.49″ 266.45 mm 682-20-303 0.450 ±0.005 0.355 0.419 0.420 A 34
10.49″ 266.45 mm 682-20-318 0.450 ±0.005 0.355 0.419 0.420 A 34
10.49″ 266.45 mm 682-21-303 0.415 ±0.005 0.355 0.389 0.420 A 34
10.49″ 266.45 mm 682-21-318 0.415 ±0.005 0.355 0.389 0.420 A 34
10.75″ 273.05 mm 682-36-303 0.415 ±0.005 0.335 0.389 0.400 A 34
10.75″ 266.45 mm 682-36-318 0.415 ±0.005 0.335 0.389 0.400 A 34
  • Additional sizes can be furnished, subject to a one-time tooling charge to help to defray associated engineering, machining and set-up expenses.
  • To download the current rotary seal implementation guidelines (Kalsi Seals Handbook) in PDF format, click here.
  • Seal purchase orders should be sent to the attention of Seal Sales via fax at 281-240-0255, or by e-mail.

* The complete seal part number consists of the basic part number 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.
ŧ New size, tooling in progress.

Updated: February 9, 2018

Kalsi-brand rotary 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.