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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

    58 items total

    List of products

    115297 o krouzek 38 x 7 nbr 70 din 3770 eu origin
    O-ring 38 x 7 NBR 70, DIN 3770 EU origin
    Stock (72 pcs)
    €0,42 excl. VAT
    €0,51

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

    SKL_ON019284
    115300 o krouzek 38 x 7 fpm 80 din 3770 eu origin
    O-ring 38 x 7 FPM 80, DIN 3770 EU origin
    On order – within 3 weeks
    €5,47 excl. VAT
    €6,62

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

    SKL_ON019283
    115294 o krouzek 38 x 6 nbr 70 din 3770 eu origin
    O-ring 38 x 6 NBR 70, DIN 3770 EU origin
    Stock (4 pcs)
    €0,31 excl. VAT
    €0,37

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

    SKL_ON019275
    528727 o krouzek 38 x 6 fpm 80 din 3770
    O-ring 38 x 6 FPM 80, DIN 3770
    On order – within 3 weeks
    €2,98 excl. VAT
    €3,60

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

    SKL_ON039495
    232443 1 o krouzek 38 x 6 fpm 70 brown din 3770
    O-ring 38 x 6 FPM 70 brown, DIN 3770
    On order – within 3 weeks
    €2,23 excl. VAT
    €2,70

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

    SKL_ON038491
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 38 x 6 EPDM 70, DIN 3770 EU origin
    Stock (108 pcs)
    €0,82 excl. VAT
    €0,99

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

    SKL_ON041056
    115288 o krouzek 38 x 5 nbr 70 din 3770 eu origin
    O-ring 38 x 5 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,19 excl. VAT
    €0,23

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

    SKL_ON019246
    115285 o krouzek 38 x 5 nbr 70 din 3770
    O-ring 38 x 5 NBR 70, DIN 3770
    On order – within 3 weeks
    €0,09 excl. VAT
    €0,11

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

    SKL_ON019248
    115291 o krouzek 38 x 5 fpm 80 din 3770 eu origin
    O-ring 38 x 5 FPM 80, DIN 3770 EU origin
    On order – within 3 weeks
    €2,17 excl. VAT
    €2,62

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

    SKL_ON019244
    115279 o krouzek 38 x 4 5 nbr 70 iso 3601
    O-ring 38 x 4.5 NBR 70, ISO 3601
    Stock (344 pcs)
    €0,16 excl. VAT
    €0,19

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

    SKL_ON019233
    528835 o krouzek 38 x 4 5 fpm 80 din 3770
    O-ring 38 x 4.5 FPM 80, DIN 3770
    Stock (16 pcs)
    €1,83 excl. VAT
    €2,22

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

    SKL_ON039531
    115282 o krouzek 38 x 4 5 fpm 70 brown iso 3601
    O-ring 38 x 4.5 FPM 70 brown, ISO 3601
    Stock (78 pcs)
    €1,19 excl. VAT
    €1,44

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

    SKL_ON019228
    234323 o krouzek 38 x 4 nbr 90 din 3770 eu origin
    O-ring 38 x 4 NBR 90, DIN 3770 EU origin
    Stock (121 pcs)
    €0,35 excl. VAT
    €0,42

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

    SKL_ON038780
    115273 o krouzek 38 x 4 nbr 70 iso 3601
    O-ring 38 x 4 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_ON019223
    229171 o krouzek 38 x 4 nbr 70 din 3770 eu origin
    O-ring 38 x 4 NBR 70, DIN 3770 EU origin
    Stock (226 pcs)
    €0,16 excl. VAT
    €0,19

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

    SKL_ON019222
    229168 o krouzek 38 x 4 mvq 70 din 3770 eu origin
    O-ring 38 x 4 MVQ 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_ON019220
    565441 o krouzek 38 x 4 mvq 70 red fda din 3770
    O-ring 38 x 4 MVQ 70 red, FDA, DIN 3770
    Stock (130 pcs)
    €0,71 excl. VAT
    €0,86

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

    SKL_ON040473
    234452 1 o krouzek 38 x 4 hnbr 70 din 3770 eu origin zeleny
    O-ring 38 x 4 HNBR 70, DIN 3770, EU origin, green
    Stock (17 pcs)
    €1,25 excl. VAT
    €1,51

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

    SKL_ON038823
    234998 o krouzek 38 x 4 fpm 80 din 3770 eu origin
    O-ring 38 x 4 FPM 80, DIN 3770, EU origin
    On order – within 3 weeks
    €1,15 excl. VAT
    €1,39

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

    SKL_ON039005
    115276 o krouzek 38 x 4 fpm 80 din 3770 eu origin
    O-ring 38 x 4 FPM 80, DIN 3770 EU origin
    Stock (30 pcs)
    €1,15 excl. VAT
    €1,39

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

    SKL_ON019217
    529336 o krouzek 38 x 4 epdm 70 peroxide fda din 3770
    O-ring 38 x 4 EPDM 70 peroxide FDA, DIN 3770
    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_ON039698
    560710 o krouzek 38 x 3 5 nbr 80 din 3770
    O-ring 38 x 3.5 NBR 80, DIN 3770
    Stock (117 pcs)
    €0,29 excl. VAT
    €0,35

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

    SKL_ON040172
    229165 o krouzek 38 x 3 5 nbr 70 din 3770 eu origin
    O-ring 38 x 3.5 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks (2 pcs)
    €0,26 excl. VAT
    €0,31

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

    SKL_ON019175
    115267 o krouzek 38 x 3 5 nbr 70 din 3770
    O-ring 38 x 3.5 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_ON019177
    234905 o krouzek 38 x 3 5 mvq 70 red fda din 3770 eu origin
    O-ring 38 x 3.5 MVQ 70 red, FDA, DIN 3770, EU origin
    On order – within 3 weeks (1 pcs)
    €0,43 excl. VAT
    €0,52

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

    SKL_ON038974
    115270 o krouzek 38 x 3 5 mvq 70 red din 3770 eu origin
    O-ring 38 x 3.5 MVQ 70 red, 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_ON019172
    115264 o krouzek 38 x 3 5 fpm 70 black iso 3601
    O-ring 38 x 3.5 FPM 70 black, ISO 3601
    On order – within 10 weeks
    €0,53 excl. VAT
    €0,64

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

    SKL_ON019167
    565003 o krouzek 38 x 3 5 epdm 70 din 3770
    O-ring 38 x 3.5 EPDM 70, DIN 3770
    Stock (162 pcs)
    €0,42 excl. VAT
    €0,51

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

    SKL_ON040327
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 38 x 3 NBR 90, DIN 3770 EU origin
    Stock (318 pcs)
    €0,16 excl. VAT
    €0,19

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

    SKL_ON041055
    563866 o krouzek 38 x 3 nbr 80 din 3770
    O-ring 38 x 3 NBR 80, DIN 3770
    Stock (140 pcs)
    €0,33 excl. VAT
    €0,40

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

    SKL_ON040285
    115252 o krouzek 38 x 3 nbr 70 iso 3601
    O-ring 38 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_ON019161
    115255 o krouzek 38 x 3 nbr 70 din 3770 eu origin
    O-ring 38 x 3 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,12 excl. VAT
    €0,14

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

    SKL_ON019160
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 38 x 3 MVQ 70 red, DIN 3770 EU origin
    Stock (18 pcs)
    €0,35 excl. VAT
    €0,42

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

    SKL_ON041054
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 38 x 3 MVQ 70 FDA red, DIN 3770 EU origin
    Stock (246 pcs)
    €0,35 excl. VAT
    €0,42

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

    SKL_ON041053
    115261 o krouzek 38 x 3 fpm 80 din 3770 eu origin
    O-ring 38 x 3 FPM 80, DIN 3770 EU origin
    Stock (90 pcs)
    €0,73 excl. VAT
    €0,88

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

    SKL_ON019157
    229162 o krouzek 38 x 3 fpm 70 brown iso 3601
    O-ring 38 x 3 FPM 70 brown, ISO 3601
    On order – within 10 weeks
    €0,69 excl. VAT
    €0,84

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

    SKL_ON019155
    115258 o krouzek 38 x 3 epdm 70 din 3770 eu origin
    O-ring 38 x 3 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,25 excl. VAT
    €0,30

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

    SKL_ON019154
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 38 x 2.6 NBR 70, DIN 3770 EU origin
    Stock (1570 pcs)
    €0,42 excl. VAT
    €0,51

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

    SKL_ON041052
    115246 o krouzek 38 x 2 5 nbr 90 din 3770 eu origin
    O-ring 38 x 2.5 NBR 90, DIN 3770 EU origin
    Stock (247 pcs)
    €0,26 excl. VAT
    €0,32

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

    SKL_ON019129
    115249 o krouzek 38 x 2 5 nbr 80 din 3770 eu origin
    O-ring 38 x 2.5 NBR 80, DIN 3770 EU origin
    On order – within 3 weeks
    €0,25 excl. VAT
    €0,30

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

    SKL_ON019128
    115243 o krouzek 38 x 2 5 nbr 70 iso 3601
    O-ring 38 x 2.5 NBR 70, ISO 3601
    Stock (9916 pcs)
    €0,09 excl. VAT
    €0,11

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

    SKL_ON019127
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 38 x 2.5 MVQ 70 FDA red, DIN 3770 EU origin
    Stock (217 pcs)
    €0,30 excl. VAT
    €0,36

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

    SKL_ON041051
    115240 o krouzek 38 x 2 5 fpm 80 din 3770 eu origin
    O-ring 38 x 2.5 FPM 80, DIN 3770 EU origin
    Stock (6 pcs)
    €0,78 excl. VAT
    €0,94

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

    SKL_ON019124
    115237 o krouzek 38 x 2 5 fpm 70 brown iso 3601
    O-ring 38 x 2.5 FPM 70 brown, ISO 3601
    Stock (13 pcs)
    €0,62 excl. VAT
    €0,75

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

    SKL_ON019122
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 38 x 2.5 EPDM 70, DIN 3770 EU origin
    Stock (308 pcs)
    €0,26 excl. VAT
    €0,32

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

    SKL_ON041050
    115231 o krouzek 38 x 2 pu 029281 9 pu eu origin
    O-ring 38 x 2 PU, 029281.9 PU EU origin
    Stock (19 pcs)
    €0,70 excl. VAT
    €0,85

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

    SKL_ON019119
    115219 o krouzek 38 x 2 nbr 90 din 3770 eu origin
    O-ring 38 x 2 NBR 90, DIN 3770 EU origin
    Stock (2388 pcs)
    €0,14 excl. VAT
    €0,17

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

    SKL_ON019117
    229159 o krouzek 38 x 2 nbr 70 iso 3601
    O-ring 38 x 2 NBR 70, ISO 3601
    Stock (263 pcs)
    €0,07 excl. VAT
    €0,08

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

    SKL_ON019115
    232440 1 o krouzek 38 x 2 nbr 70 din 3770
    O-ring 38 x 2 NBR 70, DIN 3770
    Stock (465 pcs)
    €0,07 excl. VAT
    €0,09

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

    SKL_ON038490
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 38 x 2 MVQ, 029281.9 SI EU origin
    Not on stock (1 pcs)
    €0,41 excl. VAT
    €0,50

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

    SKL_ON041378
    234869 o krouzek 38 x 2 mvq 70 red fda din 3770 eu origin
    O-ring 38 x 2 MVQ 70 red, FDA, DIN 3770, EU origin
    Stock (269 pcs)
    €0,35 excl. VAT
    €0,42

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

    SKL_ON038962
    115228 o krouzek 38 x 2 fpm 80 din 3770 eu origin
    O-ring 38 x 2 FPM 80, DIN 3770 EU origin
    Stock (15 pcs)
    €0,56 excl. VAT
    €0,68

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

    SKL_ON019112
    115222 o krouzek 38 x 2 fpm 70 brown iso 3601
    O-ring 38 x 2 FPM 70 brown, ISO 3601
    Stock (266 pcs)
    €0,40 excl. VAT
    €0,48

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

    SKL_ON019110
    115234 o krouzek 38 x 2 epdm 70 din 3770 eu origin
    O-ring 38 x 2 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks (1 pcs)
    €0,24 excl. VAT
    €0,29

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

    SKL_ON019107

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