One of my customers today decided to leave me less than positive feedback saying that this item is "very expensive". So before you buy, can I ask that you are sure you know what you are buying.. This is a non-profit item which I am sourcing, manufacturing and selling for cost to help fellow Slavia users.. All you are buying is a small, thin plastic washer and a custom sourced rubber seal.. I offer this with free postage and once you take my costs and fees, I literally make nothing out of this.. So if you are expecting it to be made of gold or other exotic material, please set your expectations accordingly.. I agree that if this was an off the shelf product it would cost pence and my price would be extortionate.. But its a custom made part hence the "very expensive" price.

This is a custom breech seal kit for a Slavia ZVP .177 Airpistol (and it will fit other vintage air guns too)

It consists of an o-ring and a set of 3D printed "spacers" to raise the height of the ring so that it seals.
As of June 2024, I am also including a flexible 3D printed TPU seal, which is more like the original and may work better than the O-ring (You can see a picture of it install in my ZVP in the photo).. Both types of seal are included so you can choose what best works for you. 
If you find the 1.2mm doesn't provide a perfect seal or snags when closing the breech, you can raise/lower the height of the seal using a different coloured spacer. Or you can stack/combine them to make even taller spacers for other guns.

The following guns are similar to the Slavia ZVP and this seal may fit them, but there is no guarantee.

Diana Model 5
S2
Westlake
Pioneer
SMK S2
TechForce
Norconia
Kandar
618
Tex 086 (Confirmed working with White and Red spacer)


Simply remove your old dry/worn leather seal and replace with the kit.

EBAY NOTE: 
I have checked that this item is not prohibited under your Firearms, ammunition, replicas and militaria policy. This is not a gun, a pistol, a rifle, a frame or a receiver and it does not infringe your stated Firearms Policy