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Crosman Piston Seal, Fits NPSS, New NPS & Older Vantage Air Rifles

5.01 review

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PY-A-5203

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Description
Customer reviews
Q & A: 6 answered questions

Crosman piston seal
Fits NPSS, newer NPS and older-style Vantage air rifles
Original equipment manufacturer part

The right seal for your Crosman air rifle to bring it back to spec.

In stock

Item Code: CRS5177-012 [PY-A-5203]

other products by Crosman

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Average Customer Review

5.0 (1 review)

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Value for money5.0 5.0

By Gary from USA on 2018-03-05
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Things I liked: I installed this seal in my Benjamin Steel Eagle .22 & the Feet per second went from 730 fps to average 800 FPS.

Things I would have changed: The plastic cap at the rear of the receiver breaks from the recoil and the pieces fell into the chamber and damaged the edges of the seal and reduced the power ..that is what happened to mine.

What others should know: This Benjamin Steel Eagle .22 is a real pleasure to shoot because of the excellent accuracy. In a perfect airgun world I would rather have an increase in power to above 850 FPS..I may try installing the Giga power gas ram..I tried the Mega @ 140 atm. and it lowered the power I have now to around 700 FPS so may try the 170 atm.. not really sure if it will take it above the 800 FPS it is NOW! Which is actually pretty good power. However 850-940 is my preference.

By Chevota from USA on 2018-05-26

Comments

The seals are basically all damaged at the factory during install so I'm guessing that's what you saw? I have some pix of horrible ones! Not sure if the NP2 piston is installed in China or the US, but they don't care it gets damaged. People need to smooth all the sharp edges in the main tube where the holes and slots were stamp cut, then install a new seal or the same will happen. I usually do this before I fire a single shot. The NP2 with the oem spring should be able to get the std Crosman pellet up to 850 if you fix some misc flaws, maybe 870 if you're lucky. If you want more on up to 940 you have to get the Trail XL. My XL shoots 940 but that's about the limit, maybe 950 if I were at sea level. Out of the box less 900 b/c again you have to fix flaws first. I would've assumed the oem spring, which is ~$8, is at or above 170atm but just a guess. If you try the 170 unit let us know how it compares....

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Terry from USA asked:
So after the yes/no answer previously, does this seal replace the factory seal on an NP2?
- Chevota from USA:
  This is the factory Benjamin/Crosman seal for the NP2. The Cory at the very bottom is incorrect. Everything I wrote below is accurate. It can be confusing with all the models, and to make it worse the factory NP2 parts list doesn't show the NP2 seal part #, but this is it.
Franco from USA asked:
It works for Crosman F4, .177 Nitropiston? thank you
- Chevota from USA:
  No, you need # B18-04-1A, which is PA # Crosman Benjamin Titan Piston Seal...
Jared from USA asked:
What is the diameter of this seal?
- Chevota from USA:
  It's ~1.15" OD. Thickness ~.260". Hole ID is ~.650 and .750" and the small and large ends. It's meant to fit a 29mm bore but the hole is too big for the Trail XL. >>>>> If anyone is wondering, yes this is what the NP2 uses <<<<<