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

    58 items total

    List of products

    116149 o krouzek 45 x 8 nbr 70 din 3770 eu origin
    O-ring 45 x 8 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,67 excl. VAT
    €0,81

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

    SKL_ON021773
    116146 o krouzek 45 x 7 nbr 70 din 3770 eu origin
    O-ring 45 x 7 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,50 excl. VAT
    €0,61

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

    SKL_ON021766
    116143 o krouzek 45 x 6 nbr 70 din 3770
    O-ring 45 x 6 NBR 70, DIN 3770
    Stock (1584 pcs)
    €0,17 excl. VAT
    €0,21

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

    SKL_ON021727
    116140 o krouzek 45 x 5 5 nbr 70 din 3770 eu origin
    O-ring 45 x 5.5 NBR 70, DIN 3770 EU origin
    Stock (51 pcs)
    €0,29 excl. VAT
    €0,35

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

    SKL_ON021722
    116137 o krouzek 45 x 5 33 fpm 80 din 3770 eu origin
    O-ring 45 x 5.33 FPM 80, DIN 3770 EU origin
    Stock (5 pcs)
    €9,16 excl. VAT
    €11,08

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

    SKL_ON021721
    116134 o krouzek 45 x 5 3 nbr 70 din 3770
    O-ring 45 x 5.3 NBR 70, DIN 3770
    Stock (1803 pcs)
    €0,15 excl. VAT
    €0,18

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

    SKL_ON021719
    116119 o krouzek 45 x 5 nbr 90 iso 3601
    O-ring 45 x 5 NBR 90, ISO 3601
    Stock (2075 pcs)
    €0,26 excl. VAT
    €0,31

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

    SKL_ON021712
    116131 o krouzek 45 x 5 nbr 70 din 3770 eu origin
    O-ring 45 x 5 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_ON021707
    116122 o krouzek 45 x 5 nbr 70 din 3770
    O-ring 45 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_ON021709
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 45 x 5 MVQ 70 red, DIN 3770 EU origin
    Stock (72 pcs)
    €0,64 excl. VAT
    €0,77

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

    SKL_ON041087
    116125 o krouzek 45 x 5 fpm 80 din 3770 eu origin
    O-ring 45 x 5 FPM 80, DIN 3770 EU origin
    Stock (7 pcs)
    €2,96 excl. VAT
    €3,58

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

    SKL_ON021704
    116128 o krouzek 45 x 5 epdm 70 din 3770 eu origin
    O-ring 45 x 5 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,45 excl. VAT
    €0,54

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

    SKL_ON021701
    560722 o krouzek 45 x 4 5 nbr 90 din 3770
    O-ring 45 x 4.5 NBR 90, DIN 3770
    Stock (126 pcs)
    €0,63 excl. VAT
    €0,76

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

    SKL_ON040176
    116116 o krouzek 45 x 4 5 nbr 70 din 3770 eu origin
    O-ring 45 x 4.5 NBR 70, DIN 3770 EU origin
    Stock (35 pcs)
    €0,27 excl. VAT
    €0,33

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

    SKL_ON021698
    559441 o krouzek 45 x 4 nbr 90 din 3770
    O-ring 45 x 4 NBR 90, DIN 3770
    Stock (121 pcs)
    €0,36 excl. VAT
    €0,44

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

    SKL_ON039991
    116107 o krouzek 45 x 4 nbr 70 iso 3601
    O-ring 45 x 4 NBR 70, ISO 3601
    On order – within 10 weeks
    €0,11 excl. VAT
    €0,13

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

    SKL_ON021693
    232488 1 o krouzek 45 x 4 nbr 70 din 3770
    O-ring 45 x 4 NBR 70, DIN 3770
    Stock (240 pcs)
    €0,22 excl. VAT
    €0,27

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

    SKL_ON038506
    116110 o krouzek 45 x 4 mvq 70 din 3770 eu origin
    O-ring 45 x 4 MVQ 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_ON021691
    529027 o krouzek 45 x 4 mvq 70 red fda din 3770
    O-ring 45 x 4 MVQ 70 red FDA, DIN 3770
    Stock (61 pcs)
    €0,57 excl. VAT
    €0,69

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

    SKL_ON039595
    116113 o krouzek 45 x 4 fpm 80 din 3770 eu origin
    O-ring 45 x 4 FPM 80, DIN 3770 EU origin
    Stock (32 pcs)
    €1,41 excl. VAT
    €1,71

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

    SKL_ON021689
    116104 o krouzek 45 x 3 55 nbr 70 din 3770 eu origin
    O-ring 45 x 3.55 NBR 70, DIN 3770 EU origin
    Stock (7 pcs)
    €0,50 excl. VAT
    €0,61

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

    SKL_ON021674
    116101 o krouzek 45 x 3 55 nbr 70 din 3770
    O-ring 45 x 3.55 NBR 70, DIN 3770
    Stock (3431 pcs)
    €0,08 excl. VAT
    €0,10

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

    SKL_ON021676
    116095 o krouzek 45 x 3 5 nbr 90 din 3770 eu origin
    O-ring 45 x 3.5 NBR 90, DIN 3770 EU origin
    Stock (1572 pcs)
    €0,27 excl. VAT
    €0,33

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

    SKL_ON021666
    565240 o krouzek 45 x 3 5 nbr 70 din 3770
    O-ring 45 x 3.5 NBR 70, DIN 3770
    Stock (250 pcs)
    €0,21 excl. VAT
    €0,26

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

    SKL_ON040406
    116098 o krouzek 45 x 3 5 nbr 70 din 3770
    O-ring 45 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_ON021664
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 45 x 3.5 FPM 80, DIN 3770 EU origin
    Stock (23 pcs)
    €1,35 excl. VAT
    €1,63

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

    SKL_ON041086
    116080 o krouzek 45 x 3 nbr 90 din 3770 eu origin
    O-ring 45 x 3 NBR 90, DIN 3770 EU origin
    On order – within 3 weeks
    €0,20 excl. VAT
    €0,24

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

    SKL_ON021654
    565366 o krouzek 45 x 3 nbr 80 din 3770
    O-ring 45 x 3 NBR 80, DIN 3770
    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_ON040448
    116077 o krouzek 45 x 3 nbr 70 iso 3601
    O-ring 45 x 3 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_ON021652
    116092 o krouzek 45 x 3 nbr 70 din 3770 eu origin
    O-ring 45 x 3 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_ON021651
    116083 o krouzek 45 x 3 fpm 80 din 3770 eu origin
    O-ring 45 x 3 FPM 80, DIN 3770 EU origin
    On order – within 3 weeks
    €0,94 excl. VAT
    €1,14

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

    SKL_ON021648
    116086 o krouzek 45 x 3 fpm 70 brown iso 3601
    O-ring 45 x 3 FPM 70 brown, ISO 3601
    On order – within 10 weeks
    €0,67 excl. VAT
    €0,81

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

    SKL_ON021646
    116089 o krouzek 45 x 3 epdm 70 din 3770 eu origin
    O-ring 45 x 3 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,28 excl. VAT
    €0,34

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

    SKL_ON021645
    O-ring 45 x 3 EPDM 70 FDA peroxide
    O-ring 45 x 3 EPDM 70 FDA peroxide
    Stock (63 pcs)
    €0,36 excl. VAT
    €0,44

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

    SKL_ON040645
    529240 o krouzek 45 x 2 5 nbr 90 din 3770
    O-ring 45 x 2.5 NBR 90, DIN 3770
    Stock (123 pcs)
    €0,23 excl. VAT
    €0,28

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

    SKL_ON039666
    229267 o krouzek 45 x 2 5 nbr 70 iso 3601
    O-ring 45 x 2.5 NBR 70, ISO 3601
    On order – within 10 weeks
    €0,10 excl. VAT
    €0,12

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

    SKL_ON021627
    116062 o krouzek 45 x 2 5 nbr 70 din 3770 eu origin
    O-ring 45 x 2.5 NBR 70, DIN 3770 EU origin
    Stock (420 pcs)
    €0,12 excl. VAT
    €0,15

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

    SKL_ON021626
    116071 o krouzek 45 x 2 5 mvq 70 din 3770 eu origin
    O-ring 45 x 2.5 MVQ 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,40 excl. VAT
    €0,49

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

    SKL_ON021624
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 45 x 2.5 MVQ 70 FDA red, DIN 3770 EU origin
    Stock (168 pcs)
    €0,40 excl. VAT
    €0,49

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

    SKL_ON041085
    116074 o krouzek 45 x 2 5 fpm 80 din 3770 eu origin
    O-ring 45 x 2.5 FPM 80, DIN 3770 EU origin
    Stock (41 pcs)
    €0,74 excl. VAT
    €0,90

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

    SKL_ON021623
    116068 o krouzek 45 x 2 5 fpm 70 brown iso 3601
    O-ring 45 x 2.5 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_ON021621
    116065 o krouzek 45 x 2 5 epdm 70 din 3770 eu origin
    O-ring 45 x 2.5 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,33 excl. VAT
    €0,40

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

    SKL_ON021620
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 45 x 2.5 EPDM 70 FDA peroxide, DIN 3770 EU origin
    Stock (146 pcs)
    €0,35 excl. VAT
    €0,42

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

    SKL_ON041084
    116059 o krouzek 45 x 2 pu 029281 9 pu eu origin
    O-ring 45 x 2 PU, 029281.9 PU EU origin
    Stock (4 pcs)
    €0,89 excl. VAT
    €1,08

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

    SKL_ON021618
    234347 o krouzek 45 x 2 nbr 90 din 3770 eu origin
    O-ring 45 x 2 NBR 90, DIN 3770 EU origin
    Stock (154 pcs)
    €0,21 excl. VAT
    €0,25

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

    SKL_ON038788
    116044 o krouzek 45 x 2 nbr 70 iso 3601
    O-ring 45 x 2 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_ON021614
    116050 o krouzek 45 x 2 nbr 70 din 3770 eu origin
    O-ring 45 x 2 NBR 70, DIN 3770 EU origin
    Stock (650 pcs)
    €0,10 excl. VAT
    €0,12

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

    SKL_ON021613
    565453 o krouzek 45 x 2 mvq 70 red fda din 3770
    O-ring 45 x 2 MVQ 70 red, FDA, DIN 3770
    Stock (117 pcs)
    €0,35 excl. VAT
    €0,42

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

    SKL_ON040477
    116056 o krouzek 45 x 2 fpm 80 din 3770 eu origin
    O-ring 45 x 2 FPM 80, DIN 3770 EU origin
    On order – within 3 weeks (1 pcs)
    €0,60 excl. VAT
    €0,72

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

    SKL_ON021611
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 45 x 2 FPM 80 brown, DIN 3770 EU origin
    Stock (100 pcs)
    €0,60 excl. VAT
    €0,72

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

    SKL_ON041411
    116047 o krouzek 45 x 2 fpm 70 brown iso 3601
    O-ring 45 x 2 FPM 70 brown, ISO 3601
    On order – within 10 weeks
    €0,45 excl. VAT
    €0,55

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

    SKL_ON021609
    116053 o krouzek 45 x 2 epdm 70 din 3770 eu origin
    O-ring 45 x 2 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,31 excl. VAT
    €0,37

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

    SKL_ON021608
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 45 x 2 EPDM 70 FDA peroxide, DIN 3770 EU origin
    Stock (162 pcs)
    €0,32 excl. VAT
    €0,39

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

    SKL_ON041083
    116035 o krouzek 45 x 1 5 nbr 70 iso 3601
    O-ring 45 x 1.5 NBR 70, ISO 3601
    On order – within 10 weeks
    €0,10 excl. VAT
    €0,12

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

    SKL_ON021597

    Listing controls

    58 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