O-Rings

B5-13202-5T7

B5-11005-07-J

B2-LS103-015-M30

B4-21006-020-M10

B4-35005-020-M10

B4-41001-2T9-M10

B4-21005-015-M10

B4-35004-015-M10

B4-31024-8T9-B06

B4-31004-8T9-B06

B4-32023-5T7-B03

B4-21004-007-M10

B4-35002-005-M10

B4-31003-5T7-B06

B4-53004-020-M10

B4-22005-020-M10

B4-12004-020-M10

B2-LS202-020-M69

B5-11315-020

B5-11007-20-R

B4-82004-8T9-M27

B4-53003-015-M10

B4-22004-015-M10

B4-12003-015-M10

B4-44002-8T9-M27

B4-42002-8T9-M27

B4-72003-8T9-M27

B4-32005-8T9-B03

B4-32004-8T9-B03

B2-LS201-015-M69

B5-11314-015

B5-11006-15-R

B5-13103-8T9

B5-12103-8T9

B5-11355-07J

B4-21002-003-M10

B4-31002-2T3-B06

B4-35001-2T3-M06

B4-53002-007-M10

B4-22003-007-M10

B4-12002-007-M10

B4-32003-5T7-B03

B2-LS102-007-M30

B5-11313-007

B5-11004-07-R

B4-22002-005-M10

B5-11312-005

B5-11003-05-R

B5-13102-5T7

B5-12102-5T7

B5-11321-03J

B5-11002-03-J

B5-13201-003

B4-82002-2T7-G34

B4-82001-2T7-M18

B4-81003-2T9-M12

B4-81002-2T9-M10

B4-81001-2T3-M06

B5-51001-2T9-006

B4-53001-2T5-M10

B4-23001-2T9-M10

B4-22202-015

B4-22001-003-M10

B4-12001-2T5-M10

B4-44001-2T7-M18

B4-42001-2T7-M18

B4-72002-2T7-G34

B4-72001-2T7-M18

B4-32002-2T3-B03

B2-LS101-2T5-M30

B5-11311-2T3

B5-11001-03-R

B5-13101-003

B5-12101-003

Broadley-James supplies O-ring replacements for the various sensors and fittings that we manufacture.  Use the sizing chart to confirm exact dimensions.

Get Quote / More InfoDownload the Sizing Chart

O-rings for D.O. Sensors

Internal O-rings for 19 mm and 25 mm D.O. Sensors

O-rings need to be replaced over time. Internal o-rings for 19 mm and 25 mm D.O. sensors are included with each membrane kit. However, bulk packs are also available.

Internal O-rings for 12 mm D.O. Sensors

O-rings should be on hand when changing the membrane cartridge of a D.O. sensor. These internal o-rings are included in membrane cartridge kits. However, membrane cartridge bulk packs do not include o-rings or electrolyte solution. These items must be purchased separately.

19 mm External O-rings

This silicone o-ring will fit the external groove of any 19 mm D.O. sensor or housing. It should be replaced regularly to ensure that the housing or sensor fits securely into the port.

Standard 25 mm External O-rings

The external silicone o-ring on a 25 mm D.O. sensor is the same as the one found on a 25 mm housing. It should be replaced regularly to ensure that the sensor fits securely into the port

25 mm B. Braun Biotech External O-rings

The B. Braun Biotech D.O. sensors and housings have an EPDM o-ring seal. The internal diameter is slightly larger and the cross-section is slightly smaller than the external silicone o-rings found on other Broadley-James 25 mm housings and D.O. sensors.

O-rings for D.O. Sensors and pH Electrodes

External O-rings for 12 mm D.O. Sensors and FermProbe® pH Electrodes

The Viton o-ring and Teflon washer found on 12 mm D.O. sensors is the same as those found on FermProbes with metric threads. These seals should last the lifetime of the sensor or electrode, but replacements can be purchased in sets of three.

O-rings for FermProbe Connectors

In order to keep moisture out of the connector during autoclaving, FermProbes have a small o-ring gasket at the base of the connector. These o-rings should last the lifetime of the electrode. However, they may need to be replaced on occasion due to loss during handling.

O-rings for 25mm Housings

Standard 25 mm Housing O-rings

Broadley-James Models 320, 330, 370 housings use the same set of o-rings. O-rings should be inspected regularly and replaced at the first sign of wear.

B. Braun Biotech Housing O-rings

The external EPDM o-ring on the B. Braun Biotech housings, Models 322, 326 and 336, has a slightly smaller cross-section than those found on other Broadley-James housings. The internal silicone o-ring is the same on all Broadley-James housings. Regular inspection and replacement is recommended. Do not use grease on any housing o-ring.

Oversized 25 mm O-rings

Broadley-James also offers a thicker, more pliable o-ring for certain applications. It has a larger o.d. but is more compressible than other silicone o-rings. It can be used on any standard 25 mm housing or D.O. sensor. This unique o-ring was designed to compensate for port imperfections such as a port that is out-of-round or has an i.d. slightly greater than 25 mm.

 

Part ImagePart NumberSizeMaterialInt./Ext.Typically used inQuantity
oversized.1.0205inAG-SF25-10 (10-pack)OversizedSilicone (50 Durometer FDA Approved)External (designed to compensate for port imperfections, it has a larger o.d. and is more compressible than other silicone o-rings)

25 mm DO Sensors

25 mm pH Housings

10
oversized.1.0205in

AG-SR15-50 (50-pack)

AG-SR15-25 (25-pack)

AG-SR15-10 (10-pack)

-R15SiliconeExternal (replace regularly to ensure the housing or sensor fits securely into the port)

25 mm DO Sensors

25 mm pH Housings

50, 25, 10
-117-epdm.9965in

AG-E117-50 (50-pack)

AG-E117-25 (25-pack)

AG-E117-04 (4-pack)

-117EPDMExternal (i.d. is slightly larger and cross-section is slightly smaller than silicone o-rings found on our other 25 mm D.O. sensors pH housings)

25 mm B. Braun Biotech DO Sensors

25 mm B. Braun Biotech pH Housings (326, 336)

50, 25, 4
-016-silicone.7565in

AG-S016-50 (50-pack)

AG-S016-25 (25-pack)

AG-S016-10 (10-pack)

-016SiliconeExternal (replace regularly to ensure the housing or sensor fits securely into the port)

19 mm DO Sensors

19 mm pH Housings

(fits the external groove)

50, 25, 10
-015-silicone.6925inAG-9206-10 (10 sets)-015SiliconeInternal19 mm and 25 mm DO Sensors

10 (1 per set)

(See also: KA2501 and KA2504 cartridge sets)

-014-silicone.6300inAG-9206-10 (10 sets)-014SiliconeInternal19 mm and 25 mm DO Sensors20 (2 per set)
AM-9315-epdm.6300-inAG-E014-10 (10-pack)-014EPDMInternal12 mm, 19 mm and 25 mm DO Sensors10
metric-14x1.0.6300inAG-9206-10 (10 sets)14 x 1.0 (metric)SiliconeInternal19 mm and 25 mm DO Sensors

10 (1 per set)

(See also: KA2501 and KA2504 cartridge kits)

-111-silicone.623in

AG-S111-50 (50-pack)

AG-S111-25 (25-pack)

AG-S111-10 (10-pack)

-111SiliconeInternal

25 mm pH Housings (320, 330,370)

25 mm B. Braun Biotech pH Housings (326, 336)

50, 25, 10
-111-viton.6280-in

300-P102 (3 sets)

300-P101 (3 sets)

-111VitonExternal (seals should last the lifetime of the sensor)

12 mm DO Sensors

12 mm pH Electrodes
(F-600, F-607, F–615, F-635, F-695)

3 (1 per set)
-013-silicone.5785in

 AG-S013-25 (25-pack)

AG-S013-04 (4-pack)

 -013 Silicone External (fits at the base of the connector to keep moisture out during autoclaving) 12 mm pH Electrodes 25, 4
 D140Conn-epdm.490-in AM-9316 (1-pack) 10.4 x 1.0 mm EPDM Internal 12 mm DO Sensors (fits the connector) 1
 -011-epdm.4405in

AG-E011-25 (25-pack)

 

 -011 EPDM Internal 12 mm DO Sensors (o-rings should be on hand when changing the membrane cartridge)

25

(See also: KA1201 and KA1204 cartridge kits)

 300_P101A-teflon-wash.6810 300-P101 (3 sets) –Flat Teflon Washer External (seals should last the lifetime of the sensor) 12 mm pH Electrodes (F-600, F-607, F–615)3 (1 per set)
 300_P102A-bevel-teflon.6970 300-P102 (3 sets) – Beveled Teflon Washer External (seals should last the lifetime of the sensor)

 12 mm DO Sensors

12 mm pH Electrodes (F-635, F-695)

3 (1 per set)
 AG-9206-conical-gasket.4965 AG-9206-10 (10 sets) –Conical Silicone Gasket Internal19 mm and 25 mm DO Sensors10 (1 per set)

 

Please see part numbers in the information table to order.