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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

    161 items total

    List of products

    120151 o krouzek 95 x 4 5 nbr 70 iso 3601
    O-ring 95 x 4.5 NBR 70, ISO 3601
    On order – within 10 weeks
    €0,41 excl. VAT
    €0,50

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

    SKL_ON031531
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 95 x 4.5 NBR 70, DIN 3770 EU origin
    Stock (55 pcs)
    €0,64 excl. VAT
    €0,77

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

    SKL_ON041197
    120055 o krouzek 94 x 4 5 nbr 90 iso 3601
    O-ring 94 x 4.5 NBR 90, ISO 3601
    Stock (1173 pcs)
    €0,83 excl. VAT
    €1

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

    SKL_ON031441
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 92 x 4.5 MVQ 70 FDA red, DIN 3770 EU origin
    Stock (33 pcs)
    €1,50 excl. VAT
    €1,82

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

    SKL_ON041190
    119896 o krouzek 90 x 4 5 nbr 70 iso 3601
    O-ring 90 x 4.5 NBR 70, ISO 3601
    Stock (25 pcs)
    €0,34 excl. VAT
    €0,41

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

    SKL_ON030886
    119899 o krouzek 90 x 4 5 nbr 70 din 3770 eu origin
    O-ring 90 x 4.5 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,57 excl. VAT
    €0,69

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

    SKL_ON030885
    119677 o krouzek 86 x 4 5 nbr 70 din 3770 eu origin
    O-ring 86 x 4.5 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,51 excl. VAT
    €0,62

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

    SKL_ON030222
    119590 o krouzek 85 x 4 5 nbr 70 iso 3601
    O-ring 85 x 4.5 NBR 70, ISO 3601
    Stock (144 pcs)
    €0,32 excl. VAT
    €0,39

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

    SKL_ON030110
    119593 o krouzek 85 x 4 5 nbr 70 din 3770 eu origin
    O-ring 85 x 4.5 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,49 excl. VAT
    €0,59

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

    SKL_ON030109
    119467 o krouzek 83 x 4 5 nbr 70 iso 3601
    O-ring 83 x 4.5 NBR 70, ISO 3601
    Stock (261 pcs)
    €0,52 excl. VAT
    €0,63

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

    SKL_ON029811
    119470 o krouzek 83 x 4 5 nbr 70 din 3770 eu origin
    O-ring 83 x 4.5 NBR 70, 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_ON029810
    119395 o krouzek 82 x 4 5 fpm 80 din 3770 eu origin
    O-ring 82 x 4.5 FPM 80, DIN 3770 EU origin
    Stock (104 pcs)
    €6,23 excl. VAT
    €7,54

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

    SKL_ON029690
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 81 x 4.5 NBR 70, DIN 3770 EU origin
    Stock (78 pcs)
    €0,59 excl. VAT
    €0,71

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

    SKL_ON041167
    119317 o krouzek 80 x 4 5 nbr 70 iso 3601
    O-ring 80 x 4.5 NBR 70, ISO 3601
    On order – within 10 weeks
    €0,36 excl. VAT
    €0,44

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

    SKL_ON029307
    119320 o krouzek 80 x 4 5 nbr 70 din 3770 eu origin
    O-ring 80 x 4.5 NBR 70, DIN 3770 EU origin
    Stock (33 pcs)
    €0,54 excl. VAT
    €0,65

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

    SKL_ON029306
    119062 o krouzek 76 x 4 5 nbr 70 din 3770 eu origin
    O-ring 76 x 4.5 NBR 70, DIN 3770 EU origin
    Stock (11 pcs)
    €0,46 excl. VAT
    €0,56

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

    SKL_ON028659
    118948 o krouzek 75 x 4 5 nbr 70 din 3770 eu origin
    O-ring 75 x 4.5 NBR 70, DIN 3770 EU origin
    Stock (27 pcs)
    €0,44 excl. VAT
    €0,53

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

    SKL_ON028539
    118951 o krouzek 75 x 4 5 fpm 80 din 3770 eu origin
    O-ring 75 x 4.5 FPM 80, DIN 3770 EU origin
    On order – within 3 weeks
    €4,02 excl. VAT
    €4,87

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

    SKL_ON028538
    118819 o krouzek 74 x 4 5 fpm 80 din 3770 eu origin
    O-ring 74 x 4.5 FPM 80, DIN 3770 EU origin
    On order – within 3 weeks
    €3,08 excl. VAT
    €3,73

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

    SKL_ON028357
    232656 1 o krouzek 73 x 4 5 nbr 70 din 3770
    O-ring 73 x 4.5 NBR 70, DIN 3770
    Stock (27 pcs)
    €0,52 excl. VAT
    €0,63

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

    SKL_ON038562
    118768 o krouzek 73 x 4 5 fpm 80 din 3770 eu origin
    O-ring 73 x 4.5 FPM 80, DIN 3770 EU origin
    On order – within 3 weeks
    €3,10 excl. VAT
    €3,75

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

    SKL_ON028200
    118684 o krouzek 72 x 4 5 nbr 70 din 3770 eu origin
    O-ring 72 x 4.5 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €2,03 excl. VAT
    €2,46

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

    SKL_ON028051
    118588 o krouzek 71 x 4 5 nbr 70 din 3770 eu origin
    O-ring 71 x 4.5 NBR 70, DIN 3770 EU origin
    Stock (110 pcs)
    €0,45 excl. VAT
    €0,54

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

    SKL_ON027861
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 70 x 4.5 NBR 90, DIN 3770 EU origin
    Stock (40 pcs)
    €0,72 excl. VAT
    €0,87

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

    SKL_ON041152
    232632 1 o krouzek 68 x 4 5 nbr 70 din 3770
    O-ring 68 x 4.5 NBR 70, DIN 3770
    Stock (76 pcs)
    €0,56 excl. VAT
    €0,68

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

    SKL_ON038554
    528166 o krouzek 66 x 4 5 nbr 70 din 3770
    O-ring 66 x 4.5 NBR 70, DIN 3770
    Stock (5 pcs)
    €0,49 excl. VAT
    €0,59

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

    SKL_ON039308
    118201 o krouzek 66 x 4 5 fpm 80 din 3770 eu origin
    O-ring 66 x 4.5 FPM 80, DIN 3770 EU origin
    Stock (10 pcs)
    €3,26 excl. VAT
    €3,95

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

    SKL_ON026788
    118144 o krouzek 65 x 4 5 nbr 70 iso 3601
    O-ring 65 x 4.5 NBR 70, ISO 3601
    Stock (287 pcs)
    €0,31 excl. VAT
    €0,38

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

    SKL_ON026585
    118147 o krouzek 65 x 4 5 nbr 70 din 3770 eu origin
    O-ring 65 x 4.5 NBR 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_ON026584
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 64 x 4.5 HNBR 80 green, DIN 3770 EU origin
    Stock (13 pcs)
    €4,81 excl. VAT
    €5,82

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

    SKL_ON041135
    117913 o krouzek 63 x 4 5 nbr 70 din 3770 eu origin
    O-ring 63 x 4.5 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,64 excl. VAT
    €0,77

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

    SKL_ON026243
    528136 o krouzek 62 x 4 5 nbr 70 din 3770
    O-ring 62 x 4.5 NBR 70, DIN 3770
    On order – within 3 weeks
    €0,59 excl. VAT
    €0,71

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

    SKL_ON039298
    117673 o krouzek 60 x 4 5 nbr 70 iso 3601
    O-ring 60 x 4.5 NBR 70, ISO 3601
    Stock (180 pcs)
    €0,31 excl. VAT
    €0,38

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

    SKL_ON025594
    117676 o krouzek 60 x 4 5 nbr 70 din 3770 eu origin
    O-ring 60 x 4.5 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,36 excl. VAT
    €0,43

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

    SKL_ON025593
    108313 o krouzek 6 x 4 5 nbr 70 din 3770 eu origin
    O-ring 6 x 4.5 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,14 excl. VAT
    €0,17

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

    SKL_ON026319
    108310 o krouzek 6 x 4 5 fpm 70 brown iso 3601
    O-ring 6 x 4.5 FPM 70 brown, ISO 3601
    Stock (1175 pcs)
    €0,35 excl. VAT
    €0,42

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

    SKL_ON026316
    565303 o krouzek 58 5 x 4 5 nbr 70 din 3770
    O-ring 58.5 x 4.5 NBR 70, DIN 3770
    Stock (100 pcs)
    €0,78 excl. VAT
    €0,94

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

    SKL_ON040427
    117268 o krouzek 56 x 4 5 nbr 90 din 3770 eu origin
    O-ring 56 x 4.5 NBR 90, DIN 3770 EU origin
    Stock (5 pcs)
    €0,74 excl. VAT
    €0,89

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

    SKL_ON024670
    117265 o krouzek 56 x 4 5 nbr 70 iso 3601
    O-ring 56 x 4.5 NBR 70, ISO 3601
    Stock (861 pcs)
    €0,31 excl. VAT
    €0,38

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

    SKL_ON024669
    116917 o krouzek 53 x 4 5 nbr 70 iso 3601
    O-ring 53 x 4.5 NBR 70, ISO 3601
    Stock (1323 pcs)
    €0,24 excl. VAT
    €0,29

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

    SKL_ON023990
    116767 o krouzek 51 x 4 5 fpm 80 din 3770 eu origin
    O-ring 51 x 4.5 FPM 80, DIN 3770 EU origin
    Stock (15 pcs)
    €3,43 excl. VAT
    €4,15

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

    SKL_ON023509
    116647 o krouzek 50 x 4 5 nbr 70 iso 3601
    O-ring 50 x 4.5 NBR 70, ISO 3601
    Stock (534 pcs)
    €0,22 excl. VAT
    €0,27

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

    SKL_ON023243
    529546 o krouzek 50 x 4 5 mvq 70 din 3770
    O-ring 50 x 4.5 MVQ 70, DIN 3770
    Stock (82 pcs)
    €0,81 excl. VAT
    €0,98

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

    SKL_ON039768
    116551 o krouzek 49 x 4 5 nbr 80 din 3770 eu origin
    O-ring 49 x 4.5 NBR 80, DIN 3770 EU origin
    Stock (1103 pcs)
    €0,33 excl. VAT
    €0,40

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

    SKL_ON022790
    232506 1 o krouzek 48 x 4 5 nbr 70 din 3770
    O-ring 48 x 4.5 NBR 70, DIN 3770
    Stock (99 pcs)
    €0,34 excl. VAT
    €0,41

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

    SKL_ON038512
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 48 x 4.5 EPDM 70, DIN 3770 EU origin
    Stock (90 pcs)
    €0,66 excl. VAT
    €0,80

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

    SKL_ON041098
    116311 o krouzek 47 x 4 5 nbr 70 din 3770 eu origin
    O-ring 47 x 4.5 NBR 70, DIN 3770 EU origin
    Stock (6 pcs)
    €0,28 excl. VAT
    €0,34

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

    SKL_ON022268
    116227 o krouzek 46 x 4 5 nbr 70 din 3770 eu origin
    O-ring 46 x 4.5 NBR 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_ON021963
    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
    115942 o krouzek 44 x 4 5 nbr 70 din 3770 eu origin
    O-ring 44 x 4.5 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,24 excl. VAT
    €0,29

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

    SKL_ON021442
    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
    115621 o krouzek 41 x 4 5 nbr 70 din 3770 eu origin
    O-ring 41 x 4.5 NBR 70, DIN 3770 EU origin
    Stock (460 pcs)
    €0,25 excl. VAT
    €0,30

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

    SKL_ON020509

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