{"product_id":"fx-airguns-o-ring-4mm-x-1-5mm-nbr-70-seal-c33-c35","title":"FX Airguns O-ring 4mm x 1.5mm NBR 70 Seal (C33\/C35)","description":"\u003cp\u003eA genuine FX Airguns replacement O-ring for FX PCP air rifles, measuring 4mm internal diameter by 1.5mm cross-section and manufactured from nitrile rubber (NBR) at 70 Shore A hardness. The 70 Shore A rating gives this seal a softer, more compliant feel than harder-grade variants, allowing it to bed in and conform slightly to mating surfaces — a characteristic well suited to lower-pressure sealing positions. The FX position reference codes C33 and C35 are printed on FX rifle service diagrams, so you can cross-reference the seal position precisely before ordering. Nitrile rubber offers good compatibility with the compressed air and light lubricants used in PCP rifle maintenance. Supplied as a genuine FX Airguns part, this is the exact specification required for those positions — not an aftermarket equivalent. Keep one as a bench spare so a failed seal need not interrupt a planned outing.\u003c\/p\u003e","brand":"FX Airguns","offers":[{"title":"Default Title","offer_id":45240975753416,"sku":"S83316","price":0.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0071\/8906\/9860\/files\/Oxnc9vPtn3IwUy926Vx1QE9opukDNyjK-35.jpg?v=1793132685","url":"https:\/\/www.bushwear.co.uk\/products\/fx-airguns-o-ring-4mm-x-1-5mm-nbr-70-seal-c33-c35","provider":"BushWear","version":"1.0","type":"link"}