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    Home / Stock items / Sealing rings / O-rings

    O-rings

    O-rings in stock in sizes from an inside diameter below 1 mm up to hundreds of millimetres – more than 9,400 items. They are made to DIN 3770, DIN 3771 and ISO 3601; we stock metric and inch cross-sections 1.78, 2.62, 3.53, 5.33 and 6.99 mm.

    Materials: NBR 70 and 90 ShA for oils and fuels, FPM (Viton) 70 and 80 ShA for higher temperatures, EPDM 70 for water and steam including FDA grades, silicone MVQ, HNBR, polyurethane PU, CR, PTFE and FFKM. An O-ring is designated by inside diameter x cross-section, material and hardness – e.g. 25 x 2.5 NBR 70. Items in stock are shipped immediately, delivery within 1–2 days.

    Frequently asked questions

    How do I measure an O-ring correctly?

    For an O-ring the inside diameter and the cross-section (thickness) matter, the outside diameter is not stated. Look for the size in the form inside diameter x cross-section, for example 25 x 2.5 NBR 70. An old ring may be deformed after use, so it helps to also measure the groove or the shaft the ring sits on. Typical cross-sections of AS568 inch sizes are 1.78, 2.62, 3.53, 5.33 and 6.99 mm.

    Which O-ring material should I choose?

    NBR is the standard for oils and fuels, roughly from −30 to +100 °C. Choose FPM (Viton) for higher temperatures up to roughly +200 °C and for many chemicals. EPDM suits water and steam, roughly up to +130 °C (peroxide-cured up to +150 °C), but it is not resistant to mineral oils or ordinary grease. Silicone MVQ withstands roughly −50 to +175 °C. For aggressive media we also stock HNBR and FFKM.

    What does hardness 70 or 90 Shore A mean?

    The number after the material is the hardness in Shore A. Hardness 70 is the standard for general use, harder 90 Shore A O-rings are chosen for higher pressures and smaller gaps where a softer ring could be extruded. We mainly stock NBR 70 and NBR 90 and FPM 70 and 80. When replacing a ring, it is safest to keep the hardness of the original one.

    Do you have O-rings for the food industry?

    Yes, we stock O-rings in EPDM 70 peroxide and silicone MVQ 70 marked FDA, some items also BfR. You will find them by the FDA marking in the product name or with the material filter in the category. Silicone rings are available for example in red or transparent. Always assess compliance with regulations for a specific use according to the requirements of your operation.

    How fast can you deliver O-rings?

    We stock over 9,400 O-rings to DIN 3770 and ISO 3601 in metric and inch sizes. O-rings in stock are shipped immediately and delivery takes 1–2 days. Current availability is shown directly for each size, and you can filter the category by inside diameter, cross-section and material. If you cannot find the size you need, send us the designation and we will check whether we can supply it.

    Product sorting

    47 items total

    List of products

    232389 1 o krouzek 34 x 6 nbr 70 din 3770
    O-ring 34 x 6 NBR 70, DIN 3770
    Stock (142 pcs)
    €0,25 excl. VAT
    €0,30

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON038473
    114637 o krouzek 34 x 5 nbr 70 din 3770 eu origin
    O-ring 34 x 5 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks (1 pcs)
    €0,26 excl. VAT
    €0,31

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017699
    114634 o krouzek 34 x 5 nbr 70 din 3770
    O-ring 34 x 5 NBR 70, DIN 3770
    Stock (692 pcs)
    €0,08 excl. VAT
    €0,10

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017701
    232386 1 o krouzek 34 x 5 fpm 80 din 3770
    O-ring 34 x 5 FPM 80, DIN 3770
    On order – within 3 weeks
    €1,56 excl. VAT
    €1,89

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON038472
    114631 o krouzek 34 x 4 6 nbr 80 gost 9833 73 eu origin
    O-ring 34 x 4.6 NBR 80, GOST 9833-73 EU origin
    Stock (224 pcs)
    €0,39 excl. VAT
    €0,47

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017693
    232383 1 o krouzek 34 x 4 5 fpm 80 din 3770
    O-ring 34 x 4.5 FPM 80, DIN 3770
    On order – within 3 weeks
    €1,82 excl. VAT
    €2,20

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON038471
    229111 o krouzek 34 x 4 nbr 90 iso 3601
    O-ring 34 x 4 NBR 90, ISO 3601
    Stock (3089 pcs)
    €0,19 excl. VAT
    €0,23

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017689
    114628 o krouzek 34 x 4 nbr 90 din 3770 eu origin
    O-ring 34 x 4 NBR 90, DIN 3770 EU origin
    On order – within 3 weeks (1 pcs)
    €0,31 excl. VAT
    €0,38

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017688
    528010 o krouzek 34 x 4 nbr 70 iso 3601
    O-ring 34 x 4 NBR 70, ISO 3601
    Stock (997 pcs)
    €0,08 excl. VAT
    €0,10

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON039256
    114622 o krouzek 34 x 4 nbr 70 din 3770
    O-ring 34 x 4 NBR 70, DIN 3770
    On order – within 3 weeks
    €41 076,20 excl. VAT
    €49 702,20

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017687
    563704 o krouzek 34 x 4 mvq 70 fda red din 3770
    O-ring 34 x 4 MVQ 70 FDA red, DIN 3770
    Stock (92 pcs)
    €0,60 excl. VAT
    €0,73

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON040231
    528745 o krouzek 34 x 4 fpm 80 din 3770
    O-ring 34 x 4 FPM 80, DIN 3770
    Stock (9 pcs)
    €1,06 excl. VAT
    €1,28

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON039501
    114625 o krouzek 34 x 4 epdm 70 din 3770 eu origin
    O-ring 34 x 4 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks
    €41 076,20 excl. VAT
    €49 702,20

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017679
    564913 o krouzek 34 x 4 epdm 70 peroxide cured fda din 3770
    O-ring 34 x 4 EPDM 70 peroxide cured, FDA, DIN 3770
    Stock (139 pcs)
    €0,53 excl. VAT
    €0,64

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON040297
    114619 o krouzek 34 x 3 5 nbr 90 din 3770 eu origin
    O-ring 34 x 3.5 NBR 90, DIN 3770 EU origin
    Stock (2875 pcs)
    €0,20 excl. VAT
    €0,24

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017663
    229108 o krouzek 34 x 3 5 nbr 70 din 3770 eu origin
    O-ring 34 x 3.5 NBR 70, DIN 3770 EU origin
    Stock (49 pcs)
    €0,21 excl. VAT
    €0,26

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017660
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 34 x 3.5 MVQ 70 FDA red, DIN 3770 EU origin
    Stock (170 pcs)
    €0,55 excl. VAT
    €0,66

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON041045
    564919 o krouzek 34 x 3 5 epdm 70 peroxide cured fda din 3770
    O-ring 34 x 3.5 EPDM 70 peroxide cured, FDA, DIN 3770
    Stock (163 pcs)
    €0,47 excl. VAT
    €0,57

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON040299
    114613 o krouzek 34 x 3 nbr 90 din 3770 eu origin
    O-ring 34 x 3 NBR 90, DIN 3770 EU origin
    Stock (478 pcs)
    €0,17 excl. VAT
    €0,20

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017652
    528007 o krouzek 34 x 3 nbr 70 iso 3601
    O-ring 34 x 3 NBR 70, ISO 3601
    On order – within 10 weeks
    €0,07 excl. VAT
    €0,08

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON039255
    114610 o krouzek 34 x 3 nbr 70 din 3770 eu origin
    O-ring 34 x 3 NBR 70, DIN 3770 EU origin
    Stock (414 pcs)
    €0,09 excl. VAT
    €0,11

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017648
    114604 o krouzek 34 x 3 nbr 70 din 3770
    O-ring 34 x 3 NBR 70, DIN 3770
    On order – within 3 weeks
    €41 076,20 excl. VAT
    €49 702,20

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017650
    114607 o krouzek 34 x 3 fpm 80 din 3770 eu origin
    O-ring 34 x 3 FPM 80, DIN 3770 EU origin
    Stock (5 pcs)
    €0,69 excl. VAT
    €0,83

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017643
    229105 o krouzek 34 x 3 fpm 70 brown iso 3601
    O-ring 34 x 3 FPM 70 brown, ISO 3601
    Stock (23 pcs)
    €0,66 excl. VAT
    €0,80

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017641
    114616 o krouzek 34 x 3 epdm 70 din 3770 eu origin
    O-ring 34 x 3 EPDM 70, DIN 3770 EU origin
    Stock (209 pcs)
    €0,18 excl. VAT
    €0,22

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017640
    114586 o krouzek 34 x 2 5 nbr 70 iso 3601
    O-ring 34 x 2.5 NBR 70, ISO 3601
    Stock (246 pcs)
    €0,08 excl. VAT
    €0,10

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017622
    114589 o krouzek 34 x 2 5 nbr 70 din 3770
    O-ring 34 x 2.5 NBR 70, DIN 3770
    On order – within 3 weeks
    €0,03 excl. VAT
    €0,04

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017623
    114601 o krouzek 34 x 2 5 mvq 70 din 3770 eu origin
    O-ring 34 x 2.5 MVQ 70, DIN 3770 EU origin
    On order – within 3 weeks (1 pcs)
    €0,33 excl. VAT
    €0,40

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017619
    114595 o krouzek 34 x 2 5 fpm 80 din 3770 eu origin
    O-ring 34 x 2.5 FPM 80, DIN 3770 EU origin
    Stock (54 pcs)
    €0,63 excl. VAT
    €0,76

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017618
    114592 o krouzek 34 x 2 5 fpm 70 brown iso 3601
    O-ring 34 x 2.5 FPM 70 brown, ISO 3601
    Stock (543 pcs)
    €0,58 excl. VAT
    €0,70

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017616
    114598 o krouzek 34 x 2 5 epdm 70 din 3770 eu origin
    O-ring 34 x 2.5 EPDM 70, DIN 3770 EU origin
    Stock (21 pcs)
    €0,35 excl. VAT
    €0,42

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017614
    114583 o krouzek 34 x 2 3 nbr 70 din 3770 eu origin
    O-ring 34 x 2.3 NBR 70, DIN 3770 EU origin
    Stock (153 pcs)
    €0,16 excl. VAT
    €0,19

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017613
    114580 o krouzek 34 x 2 nbr 90 din 3770 eu origin
    O-ring 34 x 2 NBR 90, DIN 3770 EU origin
    Stock (83 pcs)
    €0,13 excl. VAT
    €0,16

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017603
    114568 o krouzek 34 x 2 nbr 70 iso 3601
    O-ring 34 x 2 NBR 70, ISO 3601
    Stock (304 pcs)
    €0,06 excl. VAT
    €0,07

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017601
    114571 o krouzek 34 x 2 nbr 70 din 3770 eu origin
    O-ring 34 x 2 NBR 70, DIN 3770 EU origin
    Stock (2303 pcs)
    €0,07 excl. VAT
    €0,09

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017600
    565447 o krouzek 34 x 2 mvq 70 red fda din 3770
    O-ring 34 x 2 MVQ 70 red, FDA, DIN 3770
    Stock (174 pcs)
    €0,23 excl. VAT
    €0,28

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON040475
    114574 o krouzek 34 x 2 fpm 70 brown iso 3601
    O-ring 34 x 2 FPM 70 brown, ISO 3601
    Stock (365 pcs)
    €0,37 excl. VAT
    €0,45

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017595
    114577 o krouzek 34 x 2 epdm 70 din 3770 eu origin
    O-ring 34 x 2 EPDM 70, DIN 3770 EU origin
    Stock (5 pcs)
    €0,23 excl. VAT
    €0,28

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017592
    559273 1 o krouzek 34 x 1 8 nbr 70 din 3770
    O-ring 34 x 1.8 NBR 70, DIN 3770
    On order – within 3 weeks
    €0,12 excl. VAT
    €0,15

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON039935
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 34 x 1.5 NBR 90, DIN 3770 EU origin
    Stock (530 pcs)
    €0,16 excl. VAT
    €0,19

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON041044
    559270 1 o krouzek 34 x 1 5 nbr 70 din 3770
    O-ring 34 x 1.5 NBR 70, DIN 3770
    Stock (228 pcs)
    €0,13 excl. VAT
    €0,16

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON039934
    114565 o krouzek 34 x 1 5 mvq 70 din 3770 eu origin
    O-ring 34 x 1.5 MVQ 70, DIN 3770 EU origin
    On order – within 3 weeks
    €1,34 excl. VAT
    €1,62

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017581
    114562 o krouzek 34 x 1 5 fpm 80 din 3770 eu origin
    O-ring 34 x 1.5 FPM 80, DIN 3770 EU origin
    Stock (8 pcs)
    €0,47 excl. VAT
    €0,57

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017580
    114559 o krouzek 34 x 1 5 epdm 70 din 3770 eu origin
    O-ring 34 x 1.5 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,27 excl. VAT
    €0,33

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017576
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 34 x 1 NBR 90, DIN 3770 EU origin
    Stock (550 pcs)
    €0,16 excl. VAT
    €0,19

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON041043
    114553 o krouzek 34 x 1 nbr 70 din 3770 eu origin
    O-ring 34 x 1 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,12 excl. VAT
    €0,15

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017573
    114556 o krouzek 34 x 1 fpm 80 din 3770 eu origin
    O-ring 34 x 1 FPM 80, DIN 3770 EU origin
    Stock (2 pcs)
    €0,48 excl. VAT
    €0,58

    An O-ring is a closed ring with a circular cross-section, made mainly of an...

    SKL_ON017571

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