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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

    385 items total

    List of products

    120265 o krouzek 98 04 x 1 78 nbr 70 din 3770 eu origin
    O-ring 98.04 x 1.78 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €3,02 excl. VAT
    €3,65

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

    SKL_ON031716
    120193 o krouzek 97 x 1 78 nbr 70 din 3770 eu origin
    O-ring 97 x 1.78 NBR 70, DIN 3770 EU origin
    Stock (426 pcs)
    €0,51 excl. VAT
    €0,62

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

    SKL_ON031665
    229705 o krouzek 94 97 x 1 78 fpm 80 din 3770 eu origin
    O-ring 94.97 x 1.78 FPM 80, DIN 3770 EU origin
    Stock (19 pcs)
    €1,32 excl. VAT
    €1,60

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

    SKL_ON031397
    119935 o krouzek 91 7 x 1 78 nbr 70 din 3770 eu origin
    O-ring 91.7 x 1.78 NBR 70, DIN 3770 EU origin
    Stock (83 pcs)
    €0,41 excl. VAT
    €0,50

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

    SKL_ON030984
    109297 o krouzek 9 75 x 1 78 nbr 90 din 3770 eu origin
    O-ring 9.75 x 1.78 NBR 90, DIN 3770 EU origin
    Stock (20 pcs)
    €0,07 excl. VAT
    €0,08

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

    SKL_ON030740
    109294 o krouzek 9 75 x 1 78 nbr 70 din 3770 eu origin
    O-ring 9.75 x 1.78 NBR 70, DIN 3770 EU origin
    Stock (1960 pcs)
    €0,03 excl. VAT
    €0,04

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

    SKL_ON030739
    109300 o krouzek 9 75 x 1 78 fpm 80 din 3770 eu origin
    O-ring 9.75 x 1.78 FPM 80, DIN 3770 EU origin
    Stock (85 pcs)
    €0,31 excl. VAT
    €0,37

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

    SKL_ON030738
    109288 o krouzek 9 66 x 1 78 nbr 70 din 3770 eu origin
    O-ring 9.66 x 1.78 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks (2 pcs)
    €0,03 excl. VAT
    €0,04

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

    SKL_ON030730
    109270 o krouzek 9 52 x 1 78 nbr 70 din 3770 eu origin
    O-ring 9.52 x 1.78 NBR 70, DIN 3770 EU origin
    Stock (745 pcs)
    €0,03 excl. VAT
    €0,04

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

    SKL_ON030704
    229654 o krouzek 9 25 x 1 78 nbr 90 iso 3601
    O-ring 9.25 x 1.78 NBR 90, ISO 3601
    Stock (>10000 pcs)
    €0,02 excl. VAT
    €0,03

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

    SKL_ON030626
    109195 o krouzek 9 25 x 1 78 nbr 90 din 3770 eu origin
    O-ring 9.25 x 1.78 NBR 90, DIN 3770 EU origin
    On order – within 3 weeks (5 pcs)
    €0,03 excl. VAT
    €0,04

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

    SKL_ON030625
    109189 o krouzek 9 25 x 1 78 nbr 70 iso 3601
    O-ring 9.25 x 1.78 NBR 70, ISO 3601
    On order – within 10 weeks
    €0,02 excl. VAT
    €0,02

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

    SKL_ON030623
    109201 o krouzek 9 25 x 1 78 nbr 70 din 3770 eu origin
    O-ring 9.25 x 1.78 NBR 70, DIN 3770 EU origin
    Stock (787 pcs)
    €0,02 excl. VAT
    €0,03

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

    SKL_ON030622
    109204 o krouzek 9 25 x 1 78 mvq 70 din 3770 eu origin
    O-ring 9.25 x 1.78 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_ON030620
    233235 1 o krouzek 9 25 x 1 78 mvq 70 red fda din 3770
    O-ring 9.25 x 1.78 MVQ 70 red FDA, DIN 3770
    Stock (919 pcs)
    €0,08 excl. VAT
    €0,10

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

    SKL_ON038755
    109207 o krouzek 9 25 x 1 78 fpm 80 din 3770 eu origin
    O-ring 9.25 x 1.78 FPM 80, DIN 3770 EU origin
    Stock (414 pcs)
    €0,19 excl. VAT
    €0,23

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

    SKL_ON030619
    565690 o krouzek 9 25 x 1 78 fpm 75 brown din 3770
    O-ring 9.25 x 1.78 FPM 75 brown, DIN 3770
    On order – within 3 weeks
    €0,17 excl. VAT
    €0,21

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

    SKL_ON040556
    109192 o krouzek 9 25 x 1 78 fpm 70 brown iso 3601
    O-ring 9.25 x 1.78 FPM 70 brown, 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_ON030617
    109198 o krouzek 9 25 x 1 78 epdm 70 din 3770 eu origin
    O-ring 9.25 x 1.78 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks (2 pcs)
    €0,03 excl. VAT
    €0,04

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

    SKL_ON030615
    235130 o krouzek 9 25 x 1 78 cr 70 neopren din 3770 eu origin
    O-ring 9.25 x 1.78 CR 70 (Neoprene), DIN 3770, EU origin
    Stock (1450 pcs)
    €0,49 excl. VAT
    €0,59

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

    SKL_ON039049
    109153 o krouzek 9 02 x 1 78 fpm 80 din 3770 eu origin
    O-ring 9.02 x 1.78 FPM 80, DIN 3770 EU origin
    Stock (1719 pcs)
    €0,18 excl. VAT
    €0,22

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

    SKL_ON030570
    562567 o krouzek 9 x 1 78 hnbr 70 green iso 3601
    O-ring 9 x 1.78 HNBR 70 green, ISO 3601
    Stock (672 pcs)
    €0,56 excl. VAT
    €0,68

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

    SKL_ON040221
    528220 o krouzek 88 62 x 1 78 nbr 70 iso 3601
    O-ring 88.62 x 1.78 NBR 70, ISO 3601
    Stock (271 pcs)
    €0,18 excl. VAT
    €0,22

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

    SKL_ON039326
    119806 o krouzek 88 62 x 1 78 epdm 70 din 3770 eu origin
    O-ring 88.62 x 1.78 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,61 excl. VAT
    €0,74

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

    SKL_ON030398
    119803 o krouzek 88 6 x 1 78 mvq 70 din 3770 eu origin
    O-ring 88.6 x 1.78 MVQ 70, DIN 3770 EU origin
    Stock (2 pcs)
    €0,62 excl. VAT
    €0,75

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

    SKL_ON030396
    119641 o krouzek 85 34 x 1 78 fpm 80 din 3770 eu origin
    O-ring 85.34 x 1.78 FPM 80, DIN 3770 EU origin
    Stock (4 pcs)
    €1,36 excl. VAT
    €1,65

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

    SKL_ON030005
    119542 o krouzek 85 x 1 78 nbr 70 din 3770 eu origin
    O-ring 85 x 1.78 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks (1 pcs)
    €0,34 excl. VAT
    €0,41

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

    SKL_ON030023
    109387 109387 o krouzek 10 x 2 nbr 3167 eu origin
    O-ring 85 x 1.78 FPM 75 brown, DIN 3770 EU origin
    Stock (40 pcs)
    €1,18 excl. VAT
    €1,43

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

    SKL_ON041175
    232698 1 o krouzek 82 28 x 1 78 nbr 70 din 3770
    O-ring 82.28 x 1.78 NBR 70, DIN 3770
    On order – within 3 weeks
    €0,15 excl. VAT
    €0,18

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

    SKL_ON038576
    119434 o krouzek 82 28 x 1 78 mvq 70 din 3770 eu origin
    O-ring 82.28 x 1.78 MVQ 70, DIN 3770 EU origin
    Stock (5 pcs)
    €0,60 excl. VAT
    €0,73

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

    SKL_ON029566
    559129 o krouzek 82 28 x 1 78 fpm 80 brown din 3770
    O-ring 82.28 x 1.78 FPM 80 brown, DIN 3770
    Stock (46 pcs)
    €1,12 excl. VAT
    €1,35

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

    SKL_ON039887
    119431 o krouzek 82 27 x 1 78 nbr 70 din 3770 eu origin
    O-ring 82.27 x 1.78 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,26 excl. VAT
    €0,31

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

    SKL_ON029560
    108988 o krouzek 8 74 x 1 78 hnbr 70 din 3770 eu origin
    O-ring 8.74 x 1.78 HNBR 70, DIN 3770 EU origin
    Stock (77 pcs)
    €10,40 excl. VAT
    €12,59

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

    SKL_ON029148
    108982 o krouzek 8 73 x 1 78 nbr 90 din 3770 eu origin
    O-ring 8.73 x 1.78 NBR 90, DIN 3770 EU origin
    Stock (140 pcs)
    €0,04 excl. VAT
    €0,05

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

    SKL_ON029147
    527875 o krouzek 8 73 x 1 78 nbr 70 din 3770
    O-ring 8.73 x 1.78 NBR 70, DIN 3770
    Stock (1884 pcs)
    €0,02 excl. VAT
    €0,03

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

    SKL_ON039211
    529138 o krouzek 8 73 x 1 78 mvq 70 red fda din 3770
    O-ring 8.73 x 1.78 MVQ 70 red FDA, DIN 3770
    Stock (170 pcs)
    €0,08 excl. VAT
    €0,10

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

    SKL_ON039632
    108985 o krouzek 8 73 x 1 78 fpm 80 din 3770 eu origin
    O-ring 8.73 x 1.78 FPM 80, DIN 3770 EU origin
    Stock (38 pcs)
    €0,16 excl. VAT
    €0,19

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

    SKL_ON029144
    108979 o krouzek 8 73 x 1 78 epdm 70 din 3770 eu origin
    O-ring 8.73 x 1.78 EPDM 70, DIN 3770 EU origin
    Stock (2458 pcs)
    €0,03 excl. VAT
    €0,04

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

    SKL_ON029143
    119191 o krouzek 79 x 1 78 nbr 70 din 3770 eu origin
    O-ring 79 x 1.78 NBR 70, 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_ON028987
    119194 o krouzek 79 x 1 78 fpm 80 din 3770 eu origin
    O-ring 79 x 1.78 FPM 80, DIN 3770 EU origin
    On order – within 3 weeks
    €1,46 excl. VAT
    €1,77

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

    SKL_ON028986
    119014 o krouzek 75 92 x 1 78 nbr 70 din 3770 eu origin
    O-ring 75.92 x 1.78 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_ON028442
    229531 o krouzek 75 92 x 1 78 fpm 80 din 3770 eu origin
    O-ring 75.92 x 1.78 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_ON028440
    119017 o krouzek 75 92 x 1 78 epdm 70 din 3770 eu origin
    O-ring 75.92 x 1.78 EPDM 70, DIN 3770 EU origin
    On order – within 3 weeks
    €0,47 excl. VAT
    €0,57

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

    SKL_ON028435
    528196 o krouzek 75 x 1 78 nbr 70 din 3770
    O-ring 75 x 1.78 NBR 70, DIN 3770
    Stock (114 pcs)
    €0,75 excl. VAT
    €0,91

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

    SKL_ON039318
    118735 o krouzek 72 76 x 1 78 nbr 90 din 3770 eu origin
    O-ring 72.76 x 1.78 NBR 90, DIN 3770 EU origin
    Stock (8 pcs)
    €0,32 excl. VAT
    €0,39

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

    SKL_ON027979
    118729 o krouzek 72 76 x 1 78 nbr 70 din 3770 eu origin
    O-ring 72.76 x 1.78 NBR 70, DIN 3770 EU origin
    On order – within 3 weeks (2 pcs)
    €0,21 excl. VAT
    €0,26

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

    SKL_ON027978
    118738 o krouzek 72 76 x 1 78 mvq 70 din 3771 eu origin
    O-ring 72.76 x 1.78 MVQ 70, DIN 3771 EU origin
    On order – within 3 weeks
    €0,52 excl. VAT
    €0,63

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

    SKL_ON027977
    235085 o krouzek 72 76 x 1 78 fpm 80 din 3770 eu origin
    O-ring 72.76 x 1.78 FPM 80, DIN 3770, EU origin
    Stock (44 pcs)
    €0,80 excl. VAT
    €0,97

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

    SKL_ON039034
    118732 o krouzek 72 76 x 1 78 fpm 80 din 3770 eu origin
    O-ring 72.76 x 1.78 FPM 80, DIN 3770 EU origin
    On order – within 3 weeks
    €0,80 excl. VAT
    €0,97

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

    SKL_ON027976
    231969 1 o krouzek 7 94 x 1 78 nbr 90 din 3770
    O-ring 7.94 x 1.78 NBR 90, DIN 3770
    Stock (1408 pcs)
    €0,05 excl. VAT
    €0,06

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

    SKL_ON038333
    108766 o krouzek 7 94 x 1 78 nbr 70 din 3770 eu origin
    O-ring 7.94 x 1.78 NBR 70, DIN 3770 EU origin
    Stock (48 pcs)
    €0,02 excl. VAT
    €0,03

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

    SKL_ON027556
    529141 o krouzek 7 94 x 1 78 mvq 70 red fda din 3770
    O-ring 7.94 x 1.78 MVQ 70 red FDA, DIN 3770
    Stock (275 pcs)
    €0,08 excl. VAT
    €0,10

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

    SKL_ON039633
    108769 o krouzek 7 94 x 1 78 fpm 80 din 3770 eu origin
    O-ring 7.94 x 1.78 FPM 80, DIN 3770 EU origin
    Stock (438 pcs)
    €0,17 excl. VAT
    €0,21

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

    SKL_ON027554
    108742 o krouzek 7 66 x 1 78 nbr 90 din 3770 eu origin
    O-ring 7.66 x 1.78 NBR 90, DIN 3770 EU origin
    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_ON027528

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