DIN 7603 Copper Sealing Ring

The German standard DIN 7603 covers copper sealing rings intended for use in assembled units and mechanisms for the purpose of sealing them. These include engines, fuel devices, and hydraulic units that are components of automotive, agricultural and other machinery.

Despite the term “copper” in the product name, the standard allows the use of other non-ferrous metal alloys and technical plastic as raw material. The main geometric parameters by which sealing rings are selected are: outer diameter (8-84 mm), inner diameter (4-75 mm), and thickness, which can range from 1 mm to 2.5 mm.

The main purpose of using the copper sealing ring DIN 7603 is to reinforce a removable/detachable threaded joint when the applied torque during tightening of the fastening assembly is insufficient. It is installed under the head of a bolt, screw, self-tapping screw, or stud. In addition, the ring acts as a kind of sealant, eliminating possible gaps in the fastening if the working channel in the base material is not made quite precisely. The product helps keep the bearing surface intact.

The right choice of copper sealing ring DIN 7603 is a guarantee of fastening joint reliability

FLOK supplies metal products sourced through direct supply from manufacturers in Russia and foreign suppliers. Every batch is accompanied by quality and warranty certificates.

The full size range of copper hardware DIN 7603 is in stock. FLOK arranges supply of these products to any region of Russia and helps with selecting fasteners by size and material.

Materials:

• Non-ferrous metals, alloys, plastic: copper.

Dimensions: ring inner diameter from 4 to 75 mm, outer diameter from 8 to 84 mm, thickness from 1 to 2.5 mm.

Size	d₁	d₂	h
4×8	4.2	7.9	1
5×7.5	5.2	7.4	1
5×9*	5.2	8.9	1
6×10*	6.2	9.9	1
6.5×9.5	6.7	9.4	1
6.5×11*	6.7	10.9	1
8×11.5	8.2	11.4	1
8×12*	8.2	11.9	1
8×14	8.2	13.9	1
10×13.5	10.2	13.4	1
10×14*	10.2	13.9	1
10×15*	10.2	14.9	1
10×16	10.2	15.9	1
10×18	10.2	17.9	1.5
12×15.5	12.2	15.4	1.5
12×16	12.2	15.9	1.5
12×17*	12.2	16.9	1.5
12×18*	12.2	17.9	1.5
13×18*	13.2	17.9	1.5
14×18	14.2	17.9	1.5
14×20	14.2	19.9	1.5
15×19	15.2	18.9	1.5
16×20	16.2	19.9	1.5
16×22*	16.2	21.9	1.5
17×21	17.2	20.9	1.5
17×23*	17.2	22.9	1.5
18×22	18.2	21.9	1.5
18×24	18.2	23.9	1.5
20×24	20.2	23.9	1.5
20×26	20.2	25.9	1.5
21×26	21.2	25.9	1.5
22×27	22.2	26.9	1.5
22×29*	22.2	28.9	1.5
23×28	23.3	27.9	2
24×29	24.3	28.9	2
24×32	24.3	31.9	2
26×31	26.3	30.9	2
26×34*	26.3	33.9	2
27×32	27.3	31.9	2
28×33	28.3	32.9	2
30×36	30.3	35.9	2
32×38	32.3	37.9	2
33×38	33.3	37.9	2
33×41*	33.3	40.9	2
36×42	36.3	41.9	2
38×44	38.3	43.9	2
42×49	42.3	48.9	2
45×52	45.3	51.9	2
48×55*	48.3	54.9	2
60×68*	60.5	67.8	2.5

Designations:

* - non-standardized sizes

d₁ - washer inner diameter

d₂ - outer diameter of the washer

h - washer thickness