{"product_id":"caterpillar-8j4390-seal-kit-ctc-8j4390","title":"Caterpillar 8J4390 Seal Kit","description":"\u003cp\u003e\u003cstrong\u003eCaterpillar 8J4390 Seal Kit\u003c\/strong\u003e is a Hercules catalog product available from WQC Parts for hydraulic cylinder, seal kit, pump, motor, valve, and heavy-equipment repair applications.\u003c\/p\u003e \u003cp\u003eThis listing uses Hercules part number \u003cstrong\u003eCTC-8J4390\u003c\/strong\u003e. Catalog description: \u003cstrong\u003ePA-TFE-8-1\/4\u003c\/strong\u003e.\u003c\/p\u003e \u003ch3\u003eProduct Details\u003c\/h3\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHercules part number:\u003c\/strong\u003e CTC-8J4390\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Hydraulic cylinder seal kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference brand\/application:\u003c\/strong\u003e Caterpillar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate weight:\u003c\/strong\u003e 0.373 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog data source:\u003c\/strong\u003e 2026 US Seal Catalog\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCatalog Application Data\u003c\/h3\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog section:\u003c\/strong\u003e T-Seals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle \/ kit type:\u003c\/strong\u003e 8 A.M. To 8:00 P.M. Eastern Time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial \/ grade reference:\u003c\/strong\u003e PTFE CAP NYLON BACK-UP RUBBER ENERGIZER\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e -40° TO +220° F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure range:\u003c\/strong\u003e 0 TO 6,000 PSI .500 ±.002 3.840 ±.003 4.500 .630 ±.002 4.230 ±.003 5.000 .630 ±.002 4.730 ±.003 5.500 .630 ±.002 5.090 ±.003 6.000 .630 ±.002 5.340 ±.003 6.250 .630 ±.002 5.590 ±.003 6.500 .630 ±.002 6.090 ±.003 7.000 .630 ±.002 6.340 ±.003 7.250 .630 ±.002 6.590 ±.003 7.500 .630 ±.002 6.840 ±.003\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog page reference:\u003c\/strong\u003e 260\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUse this product when your parts book, service manual, cylinder repair list, pump\/motor breakdown, or existing component calls for \u003cstrong\u003eCTC-8J4390\u003c\/strong\u003e. It is intended to help restore sealing performance, reduce leakage, and support reliable equipment repair when correctly matched to the application.\u003c\/p\u003e \u003ch3\u003eFitment Verification\u003c\/h3\u003e\u003cp\u003eBefore ordering, confirm the \u003cstrong\u003eCTC-8J4390\u003c\/strong\u003e reference against your OEM reference number, machine model, cylinder location, bore and rod size, pump\/motor series, and serial-number range. Manufacturer names and part numbers are used for identification and fitment reference only. If you are unsure, compare the old parts, measurements, and parts-book callout before installation.\u003c\/p\u003e","brand":"HERCULES","offers":[{"title":"Default Title","offer_id":42585444450400,"sku":"CTC-8J4390","price":199.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/2922\/4032\/files\/ctc-8j4390_20_2__heavy-equipment-parts_b7d3db4c-524c-401b-b1f1-26e742c2fe4c.jpg?v=1771704525","url":"https:\/\/wqcparts.com\/es\/products\/caterpillar-8j4390-seal-kit-ctc-8j4390","provider":"WQC PARTS","version":"1.0","type":"link"}