{"product_id":"1217637-caterpillar","title":"1217637 Rear Axle Backup Ring For Caterpillar | Ruijueparts","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003e1217637, also written 121-7637, is an aftermarket backup ring referenced for the rear axle of selected Caterpillar wheeled excavators. It is a separate part of the sealing arrangement, not an alternative name for seal ring 121-7639. Keep both references distinct when preparing an axle repair order. Ruijueparts can help match the axle diagram and organise the individual rings required, allowing workshops to order the correct components without treating a backup ring as a complete axle seal kit.\u003c\/p\u003e\u003ch2\u003eItem specifics\u003c\/h2\u003e\u003cp\u003ePart Number \/ Ordering Reference: 1217637\u003c\/p\u003e\u003cp\u003eCompatible Brand: Caterpillar\u003c\/p\u003e\u003cp\u003eType: Rear Axle Backup Ring\u003c\/p\u003e\u003cp\u003eCondition: New\u003c\/p\u003e\u003cp\u003eManufacturer Type: Aftermarket\u003c\/p\u003e\u003ch3\u003eApplication\u003c\/h3\u003e\u003cp\u003eWheeled Excavator: M312 \/ M313C \/ M313D \/ M314 \/ M314F \/ M315 \/ M315C \/ M315D2 \/ M316C. Position: specified rear-axle backup-ring location.\u003c\/p\u003e\u003cp\u003eFunction: Supports the matched axle sealing arrangement as the axle transmits drive during travel.\u003c\/p\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003ch3\u003eQ1: Is 1217637 the same as 121-7639?\u003c\/h3\u003e\u003cp\u003eNo. The catalogue identifies 121-7637 as a backup ring and 121-7639 as a separate seal ring.\u003c\/p\u003e\u003ch3\u003eQ2: Can I omit the backup ring when replacing the seal?\u003c\/h3\u003e\u003cp\u003eFollow the axle service diagram. Each specified component has its own role in the sealing arrangement.\u003c\/p\u003e\u003ch3\u003eQ3: Does this include an entire axle seal set?\u003c\/h3\u003e\u003cp\u003eNo. This listing is for the backup-ring reference. Send the remaining numbers for a combined quotation.\u003c\/p\u003e\u003cp\u003eAftermarket replacement supplied by Ruijueparts. Referenced manufacturer names and numbers identify applications; this is not a genuine manufacturer product.\u003c\/p\u003e","brand":"RuiJueParts","offers":[{"title":"Default Title","offer_id":51740392128743,"sku":"1217637","price":8.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5251\/9399\/files\/1217637_seal.jpg?v=1793170835","url":"https:\/\/www.ruijueparts.com\/products\/1217637-caterpillar","provider":"RuiJueParts","version":"1.0","type":"link"}