SUNWELLSEALS Spiral Wound Gaskets Kammprofile Gaskets Ring Joint Gaskets

Spiral Wound Gaskets (SWG) are widely used as high integrity and sustainable gaskets. SUNWELL SEALS offers a complete range of spiral wound gaskets, Standard and non-standard spiral wound gasket and spiral wound gasket material . SWG can be made from a large selection of alloys and filler materials in a variety of shapes and sizes.

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Insulation Kits Torque

Make sure that the insulation kit you received is undamaged and contains the materials and parts you requested;

Check that the flange faces and fully threaded bolts are clean and lubricated;

Use the torque wrench.


Please use calibrated torque wrench or other tool which have control functions.

Be installed in accordance with the recommended torque;

Tighten the nut always in accordance with the symmetrical cross drawing. (See table 1#)

The 5 steps should be followed:

a. Initial tighten all nuts by hand, the big nut can use small wrench;

b. Tighten each nuts by 30% of recommended torque;

c. Tighten each nuts by 60% of recommended torque;

d. Tighten each nuts by 100% of recommended torque;

e. Tighten all nuts in clockwise direction to make sure all the nuts reach required torque.


Recommended Bolt Torque Chart (Table 1#)

Nominal Diameter of BoltTorque Value
(Inch)(Ft.lbs)(N.m)
1/23041
5/86082
3/4100135
7/8160217
1245332
1-1/8355481
1-1/4500678
1-3/8680922
1-1/28001,085
1-5/81,1001,491
1-3/41,5002,034
1-7/82,0002,712
22,2002,983
2-1/43,1804,312
2-1/24,4005,966
2-3/45,9208,026
37,72010,565
3-1/48.40011.389
3-1/29,00012,202
3-3/49.60013,016
410,00013,558

Notes:

> Recommended bolt torque is based on deriving a minimum gasket seating stress of 7,500 psi;

> Bolt torque values listed assume a lubricated stud bolt resulting in a 0.16 friction factor;

> Recommended torque values are based on using weld-neck (integral) flanges;

> Different sealing loads. 30 psi bolt stress may exceed the design allowable stress levels for certain stud bolt materials.