Customer support:558 694 401eshop@bohemiaseal.cz
    Currency
    EUR
    Language
    English
    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

    59 items total

    List of products

    115774 o krouzek 42 x 8 nbr 70 din 3770 eu origin
    O-ring 42 x 8 NBR 70, DIN 3770 EU origin
    Stock (64 pcs)
    €0,66 excl. VAT
    €0,80

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

    SKL_ON020873
    115768 o krouzek 42 x 7 nbr 70 din 3770 eu origin
    O-ring 42 x 7 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,63 excl. VAT
    €0,76

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

    SKL_ON020865
    115771 o krouzek 42 x 7 mvq din 3770 eu origin
    O-ring 42 x 7 MVQ, DIN 3770 EU origin
    Stock (10 pcs)
    €4,93 excl. VAT
    €5,97

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

    SKL_ON020864
    115765 o krouzek 42 x 6 nbr 70 din 3770 eu origin
    O-ring 42 x 6 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,31 excl. VAT
    €0,38

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

    SKL_ON020859
    115753 o krouzek 42 x 5 nbr 90 din 3770 eu origin
    O-ring 42 x 5 NBR 90, DIN 3770 EU origin
    Stock (17 pcs)
    €0,42 excl. VAT
    €0,51

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

    SKL_ON020836
    528064 o krouzek 42 x 5 nbr 70 iso 3601
    O-ring 42 x 5 NBR 70, ISO 3601
    On order – within 10 weeks
    €0,14 excl. VAT
    €0,17

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

    SKL_ON039274
    115750 o krouzek 42 x 5 nbr 70 din 3770 eu origin
    O-ring 42 x 5 NBR 70, DIN 3770 EU origin
    Stock (150 pcs)
    €0,25 excl. VAT
    €0,30

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

    SKL_ON020832
    115744 o krouzek 42 x 5 nbr 70 din 3770
    O-ring 42 x 5 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_ON020834
    115759 o krouzek 42 x 5 fpm 80 din 3770 eu origin
    O-ring 42 x 5 FPM 80, DIN 3770 EU origin
    On order – within 3 weeks
    €1,88 excl. VAT
    €2,28

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

    SKL_ON020829
    115762 o krouzek 42 x 5 fpm 70 din 3770 eu origin
    O-ring 42 x 5 FPM 70, DIN 3770 EU origin
    Stock (1 pcs)
    €4,31 excl. VAT
    €5,22

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

    SKL_ON020825
    115747 o krouzek 42 x 5 fpm 70 black iso 3601
    O-ring 42 x 5 FPM 70 black, ISO 3601
    Stock (8 pcs)
    €0,82 excl. VAT
    €0,99

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

    SKL_ON020826
    115756 o krouzek 42 x 5 fpm 60 din 3770 eu origin
    O-ring 42 x 5 FPM 60, DIN 3770 EU origin
    Stock (35 pcs)
    €11,45 excl. VAT
    €13,86

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

    SKL_ON020824
    115738 o krouzek 42 x 4 5 nbr 70 iso 3601
    O-ring 42 x 4.5 NBR 70, ISO 3601
    Stock (498 pcs)
    €0,15 excl. VAT
    €0,18

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

    SKL_ON020821
    115741 o krouzek 42 x 4 5 nbr 70 din 3770 eu origin
    O-ring 42 x 4.5 NBR 70, DIN 3770 EU origin
    Stock (30 pcs)
    €0,24 excl. VAT
    €0,29

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

    SKL_ON020820
    115732 o krouzek 42 x 4 nbr 90 din 3770 eu origin
    O-ring 42 x 4 NBR 90, DIN 3770 EU origin
    Stock (125 pcs)
    €0,36 excl. VAT
    €0,43

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

    SKL_ON020814
    115723 o krouzek 42 x 4 nbr 70 din 3770 eu origin
    O-ring 42 x 4 NBR 70, DIN 3770 EU origin
    Stock (285 pcs)
    €0,18 excl. VAT
    €0,22

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

    SKL_ON020811
    115726 o krouzek 42 x 4 nbr 70 din 3770
    O-ring 42 x 4 NBR 70, DIN 3770
    On order – within 3 weeks
    €0,07 excl. VAT
    €0,09

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

    SKL_ON020813
    115735 o krouzek 42 x 4 fpm 80 din 3770 eu origin
    O-ring 42 x 4 FPM 80, DIN 3770 EU origin
    Stock (5 pcs)
    €1,17 excl. VAT
    €1,42

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

    SKL_ON020808
    115729 o krouzek 42 x 4 epdm 70 din 3770 eu origin
    O-ring 42 x 4 EPDM 70, DIN 3770 EU origin
    Stock (63 pcs)
    €0,37 excl. VAT
    €0,45

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

    SKL_ON020804
    115720 o krouzek 42 x 3 5 nbr 90 din 3770 eu origin
    O-ring 42 x 3.5 NBR 90, DIN 3770 EU origin
    On order – within 3 weeks
    €0,40 excl. VAT
    €0,48

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

    SKL_ON020796
    O-ring 42 x 3.5 NBR 80 DIN 3770
    O-ring 42 x 3.5 NBR 80 DIN 3770
    Stock (197 pcs)
    €0,26 excl. VAT
    €0,32

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

    SKL_ON040846
    563749 o krouzek 42 x 3 5 nbr 70 din 3770
    O-ring 42 x 3.5 NBR 70, DIN 3770
    Stock (443 pcs)
    €0,19 excl. VAT
    €0,23

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

    SKL_ON040246
    115714 o krouzek 42 x 3 5 nbr 70 din 3770
    O-ring 42 x 3.5 NBR 70, DIN 3770
    On order – within 3 weeks
    €0,07 excl. VAT
    €0,09

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

    SKL_ON020795
    528832 o krouzek 42 x 3 5 fpm 80 din 3770
    O-ring 42 x 3.5 FPM 80, DIN 3770
    On order – within 3 weeks
    €1,08 excl. VAT
    €1,31

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

    SKL_ON039530
    115717 o krouzek 42 x 3 5 fpm 70 black iso 3601
    O-ring 42 x 3.5 FPM 70 black, ISO 3601
    On order – within 10 weeks
    €0,60 excl. VAT
    €0,73

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

    SKL_ON020788
    565009 o krouzek 42 x 3 5 epdm 70 din 3770
    O-ring 42 x 3.5 EPDM 70, DIN 3770
    Stock (80 pcs)
    €0,33 excl. VAT
    €0,40

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

    SKL_ON040329
    115711 o krouzek 42 x 3 15 nbr 70 din 3770 eu origin
    O-ring 42 x 3.15 NBR 70, DIN 3770 EU origin
    Stock (524 pcs)
    €0,26 excl. VAT
    €0,32

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

    SKL_ON020786
    115699 o krouzek 42 x 3 nbr 90 din 3770 eu origin
    O-ring 42 x 3 NBR 90, DIN 3770 EU origin
    Stock (260 pcs)
    €0,23 excl. VAT
    €0,28

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

    SKL_ON020784
    115693 o krouzek 42 x 3 nbr 70 iso 3601
    O-ring 42 x 3 NBR 70, ISO 3601
    Stock (1292 pcs)
    €0,08 excl. VAT
    €0,10

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

    SKL_ON020782
    115702 o krouzek 42 x 3 nbr 70 din 3770 eu origin
    O-ring 42 x 3 NBR 70, DIN 3770 EU origin
    Stock (23 pcs)
    €0,12 excl. VAT
    €0,14

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

    SKL_ON020781
    115708 o krouzek 42 x 3 fpm 80 din 3770 eu origin
    O-ring 42 x 3 FPM 80, DIN 3770 EU origin
    Stock (18 pcs)
    €0,84 excl. VAT
    €1,02

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

    SKL_ON020778
    115696 o krouzek 42 x 3 fpm 70 brown iso 3601
    O-ring 42 x 3 FPM 70 brown, ISO 3601
    On order – within 10 weeks
    €0,63 excl. VAT
    €0,76

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

    SKL_ON020776
    115705 o krouzek 42 x 3 epdm 70 din 3770 eu origin
    O-ring 42 x 3 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks (2 pcs)
    €0,28 excl. VAT
    €0,34

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

    SKL_ON020774
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 42 x 3 EPDM 70 FDA peroxide, DIN 3770 EU origin
    Stock (95 pcs)
    €0,34 excl. VAT
    €0,41

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

    SKL_ON041073
    115690 o krouzek 42 x 2 7 nbr 70 din 3770 eu origin
    O-ring 42 x 2.7 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,16 excl. VAT
    €0,19

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

    SKL_ON020761
    115687 o krouzek 42 x 2 5 nbr 90 din 3770 eu origin
    O-ring 42 x 2.5 NBR 90, DIN 3770 EU origin
    On order – within 3 weeks
    €0,23 excl. VAT
    €0,28

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

    SKL_ON020759
    115675 o krouzek 42 x 2 5 nbr 70 iso 3601
    O-ring 42 x 2.5 NBR 70, ISO 3601
    On order – within 10 weeks
    €0,08 excl. VAT
    €0,10

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

    SKL_ON020757
    115684 o krouzek 42 x 2 5 nbr 70 din 3770 eu origin
    O-ring 42 x 2.5 NBR 70, DIN 3770 EU origin
    Stock (993 pcs)
    €0,12 excl. VAT
    €0,15

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

    SKL_ON020756
    115678 o krouzek 42 x 2 5 nbr 70 din 3770
    O-ring 42 x 2.5 NBR 70, DIN 3770
    On order – within 3 weeks
    €0,06 excl. VAT
    €0,07

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

    SKL_ON020758
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 42 x 2.5 MVQ 70 FDA red, DIN 3770 EU origin
    Stock (194 pcs)
    €0,33 excl. VAT
    €0,40

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

    SKL_ON041072
    115681 o krouzek 42 x 2 5 fpm 70 brown iso 3601
    O-ring 42 x 2.5 FPM 70 brown, ISO 3601
    Stock (110 pcs)
    €0,64 excl. VAT
    €0,78

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

    SKL_ON020752
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 42 x 2.5 EPDM 70, DIN 3770 EU origin
    Stock (244 pcs)
    €0,27 excl. VAT
    €0,33

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

    SKL_ON041071
    115669 o krouzek 42 x 2 pu 029281 9 pu eu origin
    O-ring 42 x 2 PU, 029281.9 PU EU origin
    Stock (11 pcs)
    €0,57 excl. VAT
    €0,69

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

    SKL_ON020749
    115666 o krouzek 42 x 2 nbr 90 din 3770 eu origin
    O-ring 42 x 2 NBR 90, DIN 3770 EU origin
    On order – within 3 weeks
    €0,22 excl. VAT
    €0,27

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

    SKL_ON020747
    115651 o krouzek 42 x 2 nbr 70 iso 3601
    O-ring 42 x 2 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_ON020745
    565084 o krouzek 42 x 2 nbr 70 din 3770
    O-ring 42 x 2 NBR 70, DIN 3770
    Stock (306 pcs)
    €0,09 excl. VAT
    €0,11

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

    SKL_ON040354
    115654 o krouzek 42 x 2 nbr 70 din 3760
    O-ring 42 x 2 NBR 70, DIN 3760
    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_ON031863
    115657 o krouzek 42 x 2 nbr 3167 eu origin
    O-ring 42 x 2 NBR 3167, EU origin
    Not on stock
    €0,12 excl. VAT
    €0,14

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

    SKL_ON020743
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 42 x 2 MVQ 70 FDA red, DIN 3770 EU origin
    Stock (209 pcs)
    €0,29 excl. VAT
    €0,35

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

    SKL_ON041070
    115663 o krouzek 42 x 2 fpm 80 din 3770 eu origin
    O-ring 42 x 2 FPM 80, DIN 3770 EU origin
    Stock (118 pcs)
    €0,83 excl. VAT
    €1,01

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

    SKL_ON020740
    115660 o krouzek 42 x 2 fpm 70 brown iso 3601
    O-ring 42 x 2 FPM 70 brown, ISO 3601
    On order – within 10 weeks
    €0,50 excl. VAT
    €0,61

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

    SKL_ON020738
    115672 o krouzek 42 x 2 epdm 70 din 3770 eu origin
    O-ring 42 x 2 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,29 excl. VAT
    €0,35

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

    SKL_ON020736
    529351 o krouzek 42 x 2 epdm 70 peroxide fda din 3770
    O-ring 42 x 2 EPDM 70 peroxide FDA, DIN 3770
    Stock (147 pcs)
    €0,29 excl. VAT
    €0,35

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

    SKL_ON039703
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 42 x 1.8 NBR 70, DIN 3770 EU origin
    Stock (478 pcs)
    €0,12 excl. VAT
    €0,14

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

    SKL_ON041379

    Listing controls

    59 items total
    Top
    Fast delivery
    Fast delivery
    Optimized Inventory
    Guaranteed quality
    Guaranteed quality
    We cooperate with renowned manufacturers all over the world
    Technical support available
    Technical support available
    We cooperate with manufacturers' engineers to solve technical problems
    test
    Shoptet PremiumCreated by Shoptet Premium Copyright 2026 Bohemia Seal s.r.o.. All rights reserved. Edit cookie settings