Buy Back-up Ring? | Large Stock of Back-up Rings

Back-up Rings

Looking to buy back-up rings online quickly and easily for your high-pressure applications? At O-ring-Stocks.eu, you will find an extensive range of back-up rings that are essential for protecting your O-rings. With a large stock of anti-extrusion rings in materials such as PTFE (Teflon), NBR (ParBak®), HPU, and PE, we provide the right support against gap extrusion in hydraulic and pneumatic systems. Our selection includes PTFE back-up rings in solid, split (45°), or spiral designs, as well as concave NBR 90 Shore A rings. Our products guarantee optimal sealing under extreme conditions. Order today and benefit from our 30+ years of expertise as sealing specialists. With our complete assortment, you will always find the right solution for your technical challenge.

Product

Specifications

Dimensions

in mm

ID (Inner diameter)

OD (Outer Diameter)

H (Height)

Material

Application

Approval

Stock

Price

25.5x28.4x1

25.5 mm

28.4 mm

1 mm

HPU

€ 26,52

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35.9x40x1

35.9 mm

40 mm

1 mm

HPU

€ 20,60

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44.2x50x1

44.2 mm

50 mm

1 mm

HPU

€ 21,57

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58x63x1

58 mm

63 mm

1 mm

HPU

€ 20,05

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84x93x1

84 mm

93 mm

1 mm

HPU

€ 23,40

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120.2x126x1

120.2 mm

126 mm

1 mm

HPU

€ 23,95

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126x140x1

126 mm

140 mm

1 mm

HPU

€ 25,64

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12x16x1.2

12 mm

16 mm

1.2 mm

HPU

€ 19,60

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13x17x1.2

13 mm

17 mm

1.2 mm

HPU

€ 19,85

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14.5x17.4x1.2

14.5 mm

17.4 mm

1.2 mm

HPU

€ 19,85

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14.5x17.5x1.2

14.5 mm

17.5 mm

1.2 mm

HPU

€ 19,85

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14x18x1.2

14 mm

18 mm

1.2 mm

HPU

€ 19,85

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15.5x19.5x1.2

15.5 mm

19.5 mm

1.2 mm

HPU

€ 19,85

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20.5x23.4x1.2

20.5 mm

23.4 mm

1.2 mm

HPU

€ 19,85

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32.3x35x1.2

32.3 mm

35 mm

1.2 mm

HPU

€ 22,07

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35x39.5x1.2

35 mm

39.5 mm

1.2 mm

HPU

€ 20,71

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36x40x1.2

36 mm

40 mm

1.2 mm

HPU

€ 20,71

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170x178.6x1.2

170 mm

178.6 mm

1.2 mm

HPU

€ 27,62

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4x8x1.3

4 mm

8 mm

1.3 mm

HPU

€ 19,69

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6x10x1.3

6 mm

10 mm

1.3 mm

HPU

€ 19,69

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7x11x1.3

7 mm

11 mm

1.3 mm

HPU

€ 19,69

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8x12x1.3

8 mm

12 mm

1.3 mm

HPU

€ 19,69

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9x13x1.3

9 mm

13 mm

1.3 mm

HPU

€ 19,69

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11x15x1.3

11 mm

15 mm

1.3 mm

HPU

€ 19,69

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12x16x1.3

12 mm

16 mm

1.3 mm

HPU

€ 19,69

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13x17x1.3

13 mm

17 mm

1.3 mm

HPU

€ 19,93

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14x18x1.3

14 mm

18 mm

1.3 mm

HPU

€ 19,93

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15.4x18x1.3

15.4 mm

18 mm

1.3 mm

HPU

€ 19,93

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15x19x1.3

15 mm

19 mm

1.3 mm

HPU

€ 19,93

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16x20x1.3

16 mm

20 mm

1.3 mm

HPU

€ 19,93

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Compare

Our range of Back-up Rings:

Back-up rings PTFE

PTFE back-up rings, also known as PTFE anti-extrusion rings or support rings, are used to support and protect O-rings from gap extrusion under high pressure. Made from PTFE, these rings are ideal for applications involving high temperatures, high pressure, or aggressive media. Thanks to their shape and material, PTFE back-up rings provide an effective sealing solution for static applications in both hydraulic and pneumatic systems.

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Back-up rings PE

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Back-up rings HPU

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Back-up rings NBR (Concave)

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Name	Provider / Domain	Expiration	Description
cookiebar.accept	local	5 year	Accept the cookie bar.
cookiebar.settings	local	5 year	Settings from the cookie bar.
PHPSESSID	PHP.net	Sessions	Cookie generated by applications based on the PHP language. This is a general purpose identifier used to maintain user session variables. It is normally a random generated number, how it is used can be specific to the site, but a good example is maintaining a logged-in status for a user between pages.

Name

Provider / Domain

Expiration

Description

cookiebar.accept

local

5 year

Accept the cookie bar.

cookiebar.settings

local

5 year

Settings from the cookie bar.

PHPSESSID

PHP.net

Sessions

Cookie generated by applications based on the PHP language. This is a general purpose identifier used to maintain user session variables. It is normally a random generated number, how it is used can be specific to the site, but a good example is maintaining a logged-in status for a user between pages.

Name	Provider / Domain	Expiration	Description
vistrk	local	30 days	Serverside tracking-system.
_clck	Microsoft clarity.ms	1 year	This cookie is installed by Microsoft Clarity to store information of how visitors use a website and help in creating an analytics report of how the website is doing. The data collected including the number visitors, the source where they have come from, and the pages visited in an anonymous form.
_clsk	Microsoft clarity.ms	session	This cookie is installed by Microsoft Clarity to store information of how visitors use a website and help in creating an analytics report of how the website is doing. The data collected including the number visitors, the source where they have come from, and the pages visited in an anonymous form.
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_ga_*	Google	2 years	ID used to identify users
_ga_*	Google	2 years	ID used to identify users
_gid	Google	24 hours	ID used to identify users for 24 hours after last activity

Name

Provider / Domain

Expiration

Description

vistrk

local

30 days

Serverside tracking-system.

_clck

Microsoft
clarity.ms

1 year

This cookie is installed by Microsoft Clarity to store information of how visitors use a website and help in creating an analytics report of how the website is doing. The data collected including the number visitors, the source where they have come from, and the pages visited in an anonymous form.

_clsk

Microsoft
clarity.ms

session

_ga

Google

2 years

ID used to identify users

_gat*

Google

1 minute

Used to monitor number of Google Analytics server requests when using Google Tag Manager

_ga_*

Google

2 years

ID used to identify users

_ga_*

Google

2 years

ID used to identify users

_gid

Google

24 hours

ID used to identify users for 24 hours after last activity

Name	Provider / Domain	Expiration	Description
_fbp	Facebook facebook.com (3rd party)	4 months	Used by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers
_gcl_au	Google	3 months	Used by Google AdSense for experimenting with advertisement efficiency across websites using their services.
_uetsid	Microsoft .bing.com (3rd party) or .microsoft.com (3rd party)	30 minutes	This cookie is used by Bing to determine what ads should be shown that may be relevant to the end user perusing the site.
_uetvid	Microsoft .bing.com (3rd party) or .microsoft.com (3rd party)	16 days	This is a cookie utilised by Microsoft Bing Ads and is a tracking cookie. It allows us to engage with a user that has previously visited our website.

Name

Provider / Domain

Expiration

Description

_fbp

Facebook
facebook.com (3rd party)

4 months

Used by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers

_gcl_au

Google

3 months

Used by Google AdSense for experimenting with advertisement efficiency across websites using their services.

_uetsid

Microsoft
.bing.com (3rd party) or .microsoft.com (3rd party)

30 minutes

This cookie is used by Bing to determine what ads should be shown that may be relevant to the end user perusing the site.

_uetvid

Microsoft
.bing.com (3rd party) or .microsoft.com (3rd party)

16 days

This is a cookie utilised by Microsoft Bing Ads and is a tracking cookie. It allows us to engage with a user that has previously visited our website.

Name	Provider / Domain	Expiration	Description
TawkConnectionTime	Tawk.to Chat	session	This cookie is used to determine the connection duration of tawk sessions.
_hjAbsoluteSessionInProgress	Hotjar	30 minutes	The cookie is set so Hotjar can track the beginning of the user's journey for a total session count. It does not contain any identifiable information.
_hjFirstSeen	Hotjar	30 minutes	The cookie is set so Hotjar can track the beginning of the user's journey for a total session count. It does not contain any identifiable information.
_hjIncludedInSessionSample*	Hotjar	30 minutes	This cookie is set to let Hotjar know whether that visitor is included in the data sampling defined by your site's daily session limit
_hjIncludedInSessionSample*	Hotjar	30 minutes	This cookie is set to let Hotjar know whether that visitor is included in the data sampling defined by your site's daily session limit
_hjSession_*	Hotjar	30 minutes	A cookie that holds the current session data. This ensues that subsequent requests within the session window will be attributed to the same Hotjar session.
_hjSession_*	Hotjar	30 minutes	A cookie that holds the current session data. This ensues that subsequent requests within the session window will be attributed to the same Hotjar session.
_hjSession_*	Hotjar	30 minutes	A cookie that holds the current session data. This ensues that subsequent requests within the session window will be attributed to the same Hotjar session.
_hjSession_*	Hotjar	30 minutes	A cookie that holds the current session data. This ensues that subsequent requests within the session window will be attributed to the same Hotjar session.

Name

Provider / Domain

Expiration

Description

TawkConnectionTime

Tawk.to Chat

session

This cookie is used to determine the connection duration of tawk sessions.

_hjAbsoluteSessionInProgress

Hotjar

30 minutes

The cookie is set so Hotjar can track the beginning of the user's journey for a total session count. It does not contain any identifiable information.

_hjFirstSeen

Hotjar

30 minutes

The cookie is set so Hotjar can track the beginning of the user's journey for a total session count. It does not contain any identifiable information.

_hjIncludedInSessionSample*

Hotjar

30 minutes

This cookie is set to let Hotjar know whether that visitor is included in the data sampling defined by your site's daily session limit

_hjIncludedInSessionSample*

Hotjar

30 minutes

This cookie is set to let Hotjar know whether that visitor is included in the data sampling defined by your site's daily session limit

_hjSession_*

Hotjar

30 minutes

A cookie that holds the current session data. This ensues that subsequent requests within the session window will be attributed to the same Hotjar session.

_hjSession_*

Hotjar

30 minutes

A cookie that holds the current session data. This ensues that subsequent requests within the session window will be attributed to the same Hotjar session.

_hjSession_*

Hotjar

30 minutes

A cookie that holds the current session data. This ensues that subsequent requests within the session window will be attributed to the same Hotjar session.

_hjSession_*

Hotjar

30 minutes

A cookie that holds the current session data. This ensues that subsequent requests within the session window will be attributed to the same Hotjar session.

Name	Provider / Domain	Expiration
twk_idm_key	unknown unknown	unknown
gtm_session_start	unknown unknown	unknown
gtm_pageview_count	unknown unknown	unknown

Name

Provider / Domain

Expiration

Description

twk_idm_key

unknown
unknown

unknown

gtm_session_start

unknown
unknown

unknown

gtm_pageview_count

unknown
unknown

unknown