{"product_id":"aircomparts-uht55-piston-ring-set","title":"ACS UHT55 Piston Ring Set, High and Low Pressure, Air Compressor Pump","description":"\u003cp\u003eRings are what stand between compressed air and the crankcase. When they wear, the pump pushes oil into the discharge line, blows mist out of the breather and loses pressure at the top of its range. The UHT55 uses a different ring set on the high pressure cylinder than on the low pressure cylinder, so order the one that matches the bore you are rebuilding.\u003c\/p\u003e\n\u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh pressure set: AirComParts U2015, ACS part UHT5537\u003c\/li\u003e\n\u003cli\u003eLow pressure set: AirComParts U2020, ACS part UHT5527\u003c\/li\u003e\n\u003cli\u003eType: piston ring set\u003c\/li\u003e\n\u003cli\u003eFits: ACS UHT55 air compressor pump\u003c\/li\u003e\n\u003cli\u003eSold: one set per cylinder, select above\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eService notes\u003c\/h3\u003e\n\u003cp\u003eCheck bore condition before fitting new rings. Rings seal against the cylinder wall, and a scored or bell-mouthed bore will wear a new set out quickly and keep the oil carryover exactly where it was. Fit a new gasket set on reassembly, and refill with a compressor-grade oil rather than an automotive oil.\u003c\/p\u003e\n\u003ch3\u003eTypical applications\u003c\/h3\u003e\n\u003cp\u003eOil carryover, breather misting and loss of top-end pressure on ACS UHT55 pumps in shop, fleet and light industrial reciprocating compressors.\u003c\/p\u003e\n\u003cp\u003eACS UHT5537 and UHT5527 piston ring sets are the genuine high pressure and low pressure ring sets for the UHT55 air compressor pump, supplied by AirComParts as parts U2015 and U2020.\u003c\/p\u003e","brand":"AirComParts","offers":[{"title":"High Pressure (UHT5537)","offer_id":67622939033875,"sku":"U2015","price":25.0,"currency_code":"USD","in_stock":true},{"title":"Low Pressure (UHT5527)","offer_id":67622939066643,"sku":"U2020","price":44.2,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorstore.com\/products\/aircomparts-uht55-piston-ring-set","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}