
Welding Rings Welding Rings Welding Rings
google
OTHER
SEALING SOLUTIONS
WELDING RINGS
Welding-ring gaskets are solid, fully integral gaskets made up of sets or halves designed for critical applications.
Characteristics
These are very special seals, in which the tightness is not achieved by the classic operation of tightening the seal against the surface of the flanges but basically by welding.
The reasons for choosing this type of seal may be:
- Applications with dangerous fluids
- Combination of harsh conditions (extreme temperatures, high vibrations, movements, etc.)
Profiles and values
Depending on the application requirements, the weld joint profile can be chosen from the following table:

Details

Perfiles ASSKVR, A23KVR A24KVR
Welding joints are characterised by being welded to the flanges, such as profile A21, which has welding beads on the outside and inside of their respective diameters.
Total thickness of this joint: 2 x 4 mm = 8 mm.
Welding-Ring joints profile A22 with welding beads located on the outside.
Total thickness of this joint: 2 x 15 mm = 30 mm.
Welding-Ring joints with hollow lip, profile A23, can be used in a similar way to the lenticular joint A9, i.e. for significant radial expansions such as in the case of heating processes of different flange thicknesses.
The thickness of the joints is 2 x 15 = 30 mm.
Membrane gaskets according to profiles A22K, A23K and A24K have a serrated inner profile with a 0.5 mm thick soft material coating, which is suitable for hydraulic testing. Welded gaskets A22N, A23N and A24N have a recess for inserting a spiral wound gasket. The advantage of the A24 gasket is its high capacity to absorb movements, such as heat exchangers with heterogeneous elements with different coefficients of expansion.
Profile A25 is like A24 but with wider ends so that welding seams can be carried out without problems. Profiles A222 and A242 are like profiles A22 and A24 but with additional external support elements.
TECHNICAL DATA
For DIN/EN flanges
Profile A21

DIN 2695
For flanges from 150 to 2500 lbs
Profile A21
