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ARANDELA 5,20X7,50X7,50...

ARANDELA 5,20X7,50X7,50 PU95 ROJO MECANIZADA (Conforme FDA)

Family: Washers

Dimensions : 5.20 x 7.50 x 7.50

Material: PU

Color:

RED
*Medidas alternativas según tolerancias DIN 3771 Parte 1 o ISO 3601-1 / 1987

Part number: BUR0800520075U500R95

Weight : 0.1500 gr.

Customs tariff code: 84879000

Country of origin: FR

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ARANDELA 5,20X7,90X7,50...

ARANDELA 5,20X7,90X7,50 PU95 ROJO MECANIZADA (Conforme FDA & 1935/2004)

Family: Washers

Dimensions : 5.20 x 7.90 x 7.50

Material: PU

Color:

RED
*Medidas alternativas según tolerancias DIN 3771 Parte 1 o ISO 3601-1 / 1987

Part number: BUR0800520079U500R95

Weight : 0.2500 gr.

Customs tariff code: 84879000

Country of origin: FR

DOWNLOAD technical data sheet
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Technical data

ProfileMaterialHardnessTemperatureBarsSpeed
ArandelasNBR / FPM / VMQ / EPDM / FFKM****

*Depending on the material selected

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Standard sizes

WASHERS

The primary function of rubber washers is to create a seal and prevent leaks or friction between two surfaces. They are an excellent alternative to O-Rings and/or X-rings as they often improve the sealing efficiency. They are commonly used to create a tight seal between two connected components but can also provide electrical insulation between two connected surfaces. And last but not least, washers can help absorb vibrations, shocks, or impacts, reducing the risk of damage to the connected components and serve as a barrier between two different metals, helping to prevent galvanic corrosion.

There are different manufacturing processes to produce washers:

  • By injection or compression moulding (especially cost-effective for mass productions)
  • By Lathe cuttting (often used when precision and narrow tolerances are required)
  • By die-cutting
  • By water-jet cutting

The most common materials are EPDM, NBR and FPM but washers can be produced in any other elastomers such as VMQ, HNBR, CR, FFKM, etc... as well as in approved compounds for food (FDA, 1935/2004, NSF51), drinking water (UBA, WRAS, ACS, KIWA, EN681-1, NSF61) or gas (EN649).

For special requirements, other materials like PU, TPU or PTFE can be a very effective in specific applications.

ADVANTAGES

  • No twisting in the groove
  • No need for additional back-up ring
  • Long shelf life
  • Good resistance to extrusion, wear and abrasion
  • Low cross-section mechanical deformation

APPLICATIONS

Any application in which an O-ring can be replaced like flanges, valves, cylinders, plates or locks.

SIZES - ISO 7089

There is no chart of standard sizes since any size can be manufactured according to the needs. However, we present below some sizes as an example:

  • Washers according to ISO 7089 standard
  • Washers for fittings

Nominal 

d1 

d2 

H 

M1.6 

1,70 

4 

0,3 

M2 

2,20 

5 

0,3 

M2.5 

2,70 

6 

0,5 

M2.6 

2,80 

7 

0,5 

M3 

3,20 

7 

0,5 

M3.5 

3,70 

8 

0,5 

M4 

4,30 

9 

0,8 

M5 

5,30 

10 

1 

M6 

6,40 

12 

1,6 

M7 

7,40 

14 

1,6 

M8 

8,40 

16 

1,6 

M10 

10,50 

20 

2 

M12 

13 

24 

2,5 

M14 

15 

28 

2,5 

M16 

17 

30 

3 

M18 

19 

34 

3 

M20 

21 

37 

3 

M22 

23 

39 

3 

M24 

25 

44 

4 

M27 

28 

50 

4 

M30 

31 

56 

4 

M33 

34 

60 

5 

M36 

37 

66 

5 

M39 

40 

72 

6 

M42 

43 

78 

7 

M45 

46 

85 

7 

M48 

50 

92 

8 

M52 

54 

98 

8 

M56 

58 

105 

9 

FITTINGS

Nominal 

d1 

d2 

H 

1/4" 

8 

12 

2 

3/8" 

8 

14,50 

2 

3/8" 

10 

14 

2 

3/8" 

10 

15 

2 

20/150" 

12 

17,50 

2 

1/2" 

10 

19 

2 

1/2" 

11 

18 

2 

1/2" 

11 

19 

3 

1/2" 

12 

18 

2 

1/2" 

12 

19 

2 

1/2" 

13 

18 

2,20 

1/2" 

14 

18 

2 

5/8" 

15 

21 

2 

3/4" 

13 

24 

2,50 

3/4" 

16 

23 

2,50 

3/4" 

16 

24 

2 

3/4" 

18,5 

23,5 

2,5 

7/8" 

20 

27 

2 

7/8" 

21 

26,5 

2 

7/8" 

22 

27 

2,50 

1" 

20 

30 

2 

1" 

23 

30 

2,50 

1" 

24 

29 

2,50 

1.1/4"

28 

33 

2 

1.1/4" 

29 

38 

3 

1.1/4" 

32 

38 

2,50 

1.1/2" 

30 

44 

2,50 

1.1/2" 

35 

44 

2,50 

1.1/2" 

37 

44 

2,50 

2" 

44 

54 

3 

2" 

47 

54 

3 

2.1/2" 

56 

69 

3,50 

3" 

69 

82 

3,50 

TOLERANCES REGARDING DIAMETERS

Nominal Diameter (mm)Inside (mm)External (mm)
EN2EN1EG2EG1
FromUp toStandard tolerancesLow tolerances Standard tolerancesLow tolerances
6,30100,350,250,250,15
10160,400,350,350,20
16250,500,400,400,20
25400,700,500,500,25
40630,800,700,700,35
631001,000,800,800,40
1001601,301,001,000,50
160–0,80%0,60%0,50%0,30%

TOLERANCES REGARDING THICKNESS AND SECTION

Nominal Thickness (mm)Thickness (mm)Section (mm)
EC3EC2  EW2EW1
FromUp toStandard tolerancesLow tolerances Standard tolerancesLow tolerances
0,5010,200,150,200,10
11,600,250,200,200,10
1,602,500,350,200,200,10
2,5040,400,250,200,10
46,300,500,350,200,15
6,30100,700,400,250,20
10160,800,500,350,20
16251,000,700,400,25

Square cross-section washers (also known as Kantseal®)

Tolerances on inside diametre

d1 

Tolerance

4,00 - 14,00 

+/- 0,13 

14,01 - 15,60 

+/- 0,18 

15,61 - 25,12 

+/- 0,23 

25,13 - 29,78 

+/- 0,25 

29,79 - 34,65 

+/- 0,28 

34,66 - 44,17 

+/- 0,33 

44,18 - 50,52 

+/- 0,38 

50,53 - 66,40 

+/- 0,46 

66,41 - 75,92 

+/- 0,51 

75,93 - 94,97 

+/- 0,61 

94,98 - 107,67 

+/- 0,69 

107,68 - 126,72 

+/- 0,76 

126,73 - 133,07 

+/- 0,94 

133,08 - 158,42 

+/- 0,99 

158,43 - 183,82 

+/- 1,02 

183,83 - 209,22 

+/- 1,14 

209,23 - 234,62 

+/- 1,27 

234,63 - 278,99 

+/- 1,40 

279,00 - 405,26 

+/- 1,65 

405,27 - 430,66 

+/- 1,91 

430,67 - 456,07 

+/- 2,03 

Tolerances on thickness

H1 

W 

T 

1,68 

+/- 0,15 

+/- 0,08 

2,51 

+/- 0,15 

+/- 0,10 

3,40 

+/- 0,15 

+/- 0,10 

5,16 

+/- 0,15 

+/- 0,10 

6,73 

+/- 0,15 

+/- 0,10 

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