PIPE COUPLING FOR THE FLUID-TIGHT ATTACHMENT OF COMPONENTS IN AN AIR CONDITIONING SYSTEM

1 . A pipe coupling for joining a pipe arranged in a pipe section with a line formed in a line section in a fluid-carrying manner, comprising:

a fluid-tight seal that is established for the pipe coupling by way of a sealing washer, wherein the sealing washer is comprised of a sealing ring and a support ring, wherein the sealing ring is made out of an elastic material and situated in a sealing space, which extends in a radial direction from an outer surface of the pipe section up to the support ring, and in an axial direction from a first contact surface that runs orthogonal to the outer surface up to a second contact surface on the line section running orthogonal to the line, wherein the sealing ring fills out 90% to 98% of the sealing space in a state where the support ring flatly abuts the contact surfaces.

2 . The sealing washer according to claim 1 , wherein a thickened region of the sealing ring in an unloaded state exhibits an expanded height measuring 110% to 145% of the height of the metal ring (hM).

3 . The sealing washer according to claim 2 , wherein a thickened region of the sealing ring in an unloaded state exhibits an expanded height measuring 120% to 140% of the height of the metal ring (hM).

4 . The sealing washer according to claim 3 , wherein a thickened region of the sealing ring in an unloaded state exhibits an expanded height measuring 130% to 135% of the height of the metal ring (hM).

5 . The sealing washer according to claim 2 , wherein the thickened region is spaced apart a distance away from a radially outward joining surface between the sealing ring and support ring, wherein the ratio between the distance and the radial thickness of the sealing ring measures between 20% and 50%.

6 . The sealing washer according to claim 5 , wherein the ratio between the distance and the radial thickness of the sealing ring measures between 30% and 40%.

7 . The sealing washer according to claim 6 , wherein the ratio between the distance and the radial thickness of the sealing ring measures between 32% and 38%.

8 . The sealing washer according to claim 1 , wherein the height changes continuously in a radial direction from an origin to an inner radius lying radially inward, wherein an inclination derived from the change in height is always less than 2 .

9 . The sealing washer according to claim 8 , wherein the inclination derived from the change in height is always less than 1.9.

10 . The sealing washer according to claim 9 , wherein the inclination derived from the change in height is always less than 1.8.

11 . The sealing washer according to claim 1 , wherein a height is designed to be variable from an origin established on the sealing ring, wherein the origin is located a distance away from a radially outer joining surface between the sealing ring and support ring, wherein a ratio between the distance and the radial thickness of the sealing ring measures between 5% and 20% of the support ring.

12 . The sealing washer according to claim 11 , wherein the ratio between the distance and the radial thickness of the sealing ring measures between 8% and 17% of the support ring.

13 . The sealing washer according to claim 12 , wherein the ratio between the distance and the radial thickness of the sealing ring measures between 10% and 15% of the support ring.

14 . The sealing washer according to claim 1 , wherein the sealing ring is comprised of an ethylene propylene diene rubber.

15 . The sealing washer according to claim 1 , wherein the sealing ring is comprised of a hydrated acrylonitrile butadiene rubber.

16 . The sealing washer according to claim 1 , wherein the sealing ring exhibits a Shore hardness of 75 to 85.

17 . The sealing washer according to claim 16 , wherein the sealing ring exhibits a Shore hardness of 78 to 82.

18 . The sealing washer according to claim 1 , wherein the support ring is made out of metal.

19 . The sealing washer according to claim 1 , wherein the support ring is made out of plastic.