hw40 new o-ring (xring or quad ring)

[jagi318di]

Hello for info, weihrauch has installed a new model of piston seal on the hw40, here is the post of the French forum which talks about it, ;=)

I made a copy paste of the post, because I do not know how to copy the link of the forum

sorry for the translation, it's google, I don't speak English, but I think it may be interresting ;=))

Bjr, j'ai acquis un hw40 il y a moins d'un mois, je démonte le piston par curiosité et je m'apercois que le joint n'est pas un joint torique mais un joint à double lèvres, quelqu'un aurait il la référence de ce nouveau type de joint, chez sws, en achetant le hw40 j'avait commandé le joint de piston et de canon, et le joint de piston qu'ils m'ont fourni est le 2460 ent o-ring, si qq à des infos merci et bon we

Bjr, I acquired a hw40 less than a month ago, I dismantle the piston out of curiosity and I realize that the seal is not an O-ring but a double lip seal, does anyone have it? the reference of this new type of seal, at sws, by buying the hw40 I had ordered the piston and barrel seal, and the piston seal they provided me is the 2460 ent o-ring, if qq for info thank you and have a nice weekend


Bonjour

pour ceux que cela intéresse, voici la référence du quad ring qui remplace le o-ring d'origine

18.72 x 2.62
XR-18.72X2.62-NBR70-QR4116N14 chez 123roulement

QUAD-RING® 1. JOINTS X-RING ET QUAD-RING®/ APPLICATIONS / TEMPÉRATURES D’UTILISATION Le principe d’étanchéité des joints X-RING et Quadring®présente de fortes similitudes avec celui de l’étanchéité par joint torique. Les joints X-RING et Quad-ring®sont des éléments double effet à autoétanchéité. L’étanchéité initiale s’effectue par une compression diamétrale dans une rainure rectangulaire.La pression régnant dans le système assure une étanchéité positive fiable.

après un test de 500 plombs compression constante, montage à la graisse de silicone gorge joint et piston, (légèrement)

je n'ai pas encore eu la réponse de Weihrauch et de Schneider, dès que je l'ai je complète le post

bon we à tous et bon tir

Good morning

for those interested, here is the reference of the quad ring which replaces the original o-ring

18.72x2.62

x-ring/XR-18.72X2.62-NBR70-QR4116N14

QUAD-RING® 1. X-RING AND QUAD-RING® SEALS/ APPLICATIONS / OPERATING TEMPERATURES The sealing principle of X-RING and Quadring® seals has strong similarities with that of O-ring sealing. X-RING and Quad-ring® seals are double-acting, self-sealing elements. The initial seal is made by diametral compression in a rectangular groove. The pressure prevailing in the system ensures a reliable positive seal.

after a test of 500 pellets, constant compression, fitting with silicone grease, seal groove and piston, (slightly)

I have not yet had the answer from Weihrauch and Schneider, as soon as I have it I will complete the post

good weekend to all and good shooting

Re mise à jour

voici la réponse de SWS

Bonjour,

nous avons maintenant reçu des informations de Weihrauch selon lesquelles ce X-ring a été installé à partir du numéro de série 622736. Nous avons commandé ces joints. Vous trouverez ce joint dans notre boutique en ligne dans les prochains jours sous le numéro d'article ET-HW40-XRING.


Update

here is the response from SWS

Good morning,

we have now received information from Weihrauch that this X-ring was installed from serial number 622736. We have ordered these seals. You will find this seal in our online shop in the next few days under the article number ET-HW40-XRING.

Cordially

[jagi318di]

Good morning
I received the new quad ring seal, it does not have the measurement that I gave previously, here is the exact measurement of the quad ring 20.29x2.62, these are the dimensions of the new weihrauch seal

Hello for info, weihrauch has installed a new model of piston seal on the hw40, here is the post of the French forum which talks about it, ;=)

I made a copy paste of the post, because I do not know how to copy the link of the forum

sorry for the translation, it's google, I don't speak English, but I think it may be interresting ;=))

Bjr, j'ai acquis un hw40 il y a moins d'un mois, je démonte le piston par curiosité et je m'apercois que le joint n'est pas un joint torique mais un joint à double lèvres, quelqu'un aurait il la référence de ce nouveau type de joint, chez sws, en achetant le hw40 j'avait commandé le joint de piston et de canon, et le joint de piston qu'ils m'ont fourni est le 2460 ent o-ring, si qq à des infos merci et bon we

Bjr, I acquired a hw40 less than a month ago, I dismantle the piston out of curiosity and I realize that the seal is not an O-ring but a double lip seal, does anyone have it? the reference of this new type of seal, at sws, by buying the hw40 I had ordered the piston and barrel seal, and the piston seal they provided me is the 2460 ent o-ring, if qq for info thank you and have a nice weekend


Bonjour

pour ceux que cela intéresse, voici la référence du quad ring qui remplace le o-ring d'origine

18.72 x 2.62
XR-18.72X2.62-NBR70-QR4116N14 chez 123roulement

QUAD-RING® 1. JOINTS X-RING ET QUAD-RING®/ APPLICATIONS / TEMPÉRATURES D’UTILISATION Le principe d’étanchéité des joints X-RING et Quadring®présente de fortes similitudes avec celui de l’étanchéité par joint torique. Les joints X-RING et Quad-ring®sont des éléments double effet à autoétanchéité. L’étanchéité initiale s’effectue par une compression diamétrale dans une rainure rectangulaire.La pression régnant dans le système assure une étanchéité positive fiable.

après un test de 500 plombs compression constante, montage à la graisse de silicone gorge joint et piston, (légèrement)

je n'ai pas encore eu la réponse de Weihrauch et de Schneider, dès que je l'ai je complète le post

bon we à tous et bon tir

Good morning

for those interested, here is the reference of the quad ring which replaces the original o-ring

18.72x2.62

x-ring/XR-18.72X2.62-NBR70-QR4116N14

QUAD-RING® 1. X-RING AND QUAD-RING® SEALS/ APPLICATIONS / OPERATING TEMPERATURES The sealing principle of X-RING and Quadring® seals has strong similarities with that of O-ring sealing. X-RING and Quad-ring® seals are double-acting, self-sealing elements. The initial seal is made by diametral compression in a rectangular groove. The pressure prevailing in the system ensures a reliable positive seal.

after a test of 500 pellets, constant compression, fitting with silicone grease, seal groove and piston, (slightly)

I have not yet had the answer from Weihrauch and Schneider, as soon as I have it I will complete the post

good weekend to all and good shooting

Re mise à jour

voici la réponse de SWS

Bonjour,

nous avons maintenant reçu des informations de Weihrauch selon lesquelles ce X-ring a été installé à partir du numéro de série 622736. Nous avons commandé ces joints. Vous trouverez ce joint dans notre boutique en ligne dans les prochains jours sous le numéro d'article ET-HW40-XRING.


Update

here is the response from SWS

Good morning,

we have now received information from Weihrauch that this X-ring was installed from serial number 622736. We have ordered these seals. You will find this seal in our online shop in the next few days under the article number ET-HW40-XRING.

Cordially

[nced]

When I first started making oring sealed piston caps a couple decades ago for my R9, HW95 & HW77 I used a standard "size 020 Viton round cross section orings" and they worked great for my application. Then I read about the "X rings" ("quad rings") and they also worked well. Problem with the quad rings for a HW95 was the rather tedious instaling a "quad seal" past all the HW95 receiver knockouts, dowel pin holes and cocking shoe slot without damaging the rather delicate "lobes" during installation. This wasn't an issue with the HW77 installation that didn't have a bunch of knockouts and probably not an issue with a HW40.

After trying the quad seal over a decade ago I reverted back to standard "round cross section orings for the home turned piston caps. Here are a few pics of the quad seals I used for a while...........


Here are a few pics of a 020 size standard oring installation..........

[Yogi]

Ed,

I love your o-ring nosed piston.
Is your piston slightly longer than a normal piston sealed piston?  Maybe 8-10mm longer?

-Y