{"product_id":"pss-shaft-seal-2-1-2-shaft-3-1-2-stern-tube-02212312","title":"PSS Shaft Seal 2-1\/2\" Shaft x 3-1\/2\" Stern Tube | 02-212-312","description":"\u003ch2\u003ePSS Dripless Shaft Seal — 2-1\/2\" Shaft × 3-1\/2\" Stern Tube\u003c\/h2\u003e\n\n\u003cp\u003eThe PSS 02-212-312 is a mechanical face-type dripless shaft seal for inboard vessels running a \u003cstrong\u003e2-1\/2\" propeller shaft\u003c\/strong\u003e and a \u003cstrong\u003e3-1\/2\" to 3-5\/8\" stern tube\u003c\/strong\u003e. A stationary carbon flange presses against a rotating stainless-steel rotor to form a positive seal — no drip, no packing adjustment, no shaft wear from a conventional stuffing box.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eShaft diameter: 2-1\/2\"\u003c\/li\u003e\n\u003cli\u003eStern tube (shaft log) OD: 3-1\/2\" to 3-5\/8\"\u003c\/li\u003e\n\u003cli\u003eSeal type: PSS Type A mechanical face seal\u003c\/li\u003e\n\u003cli\u003eSealing flange: carbon\u003c\/li\u003e\n\u003cli\u003eRotor: stainless steel\u003c\/li\u003e\n\u003cli\u003eCompression maintained by bellows\u003c\/li\u003e\n\u003cli\u003eOverall length: approx. 9.625\"\u003c\/li\u003e\n\u003cli\u003ePart number: 02-212-312 \/ 02212312\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInboard marine propulsion systems with a 2-1\/2\" propeller shaft\u003c\/li\u003e\n\u003cli\u003eStern tubes measuring 3-1\/2\" to 3-5\/8\" OD at the bellows connection point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoth shaft diameter and stern-tube diameter must be confirmed before ordering\u003c\/strong\u003e — do not select by shaft size alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBellows shows aging, cracking, or deterioration (below-waterline component — inspect regularly)\u003c\/li\u003e\n\u003cli\u003eSealing faces are damaged or no longer seat correctly\u003c\/li\u003e\n\u003cli\u003eLeakage develops at the seal interface\u003c\/li\u003e\n\u003cli\u003eHose connections, clamps, or rotor set screws show corrosion or looseness\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eClean and inspect carbon and stainless sealing faces before assembly\u003c\/li\u003e\n\u003cli\u003eSet bellows compression per PSS specifications for this shaft size\u003c\/li\u003e\n\u003cli\u003ePosition rotor accurately on the shaft and torque hardware to manufacturer spec\u003c\/li\u003e\n\u003cli\u003eVerify available shaft space against the 9.625\" installed length\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAlternate \u0026amp; Cross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e02-212-312\u003c\/li\u003e\n\u003cli\u003e02212312\u003c\/li\u003e\n\u003cli\u003e2212312\u003c\/li\u003e\n\u003cli\u003eDistributor ref: 730-02212312\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOther PSS Shaft Seal Sizes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pss-02078112-pss-shaft-seal-7-8\"\u003ePSS 02078112 — 7\/8\" Shaft\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pss-02100112-pss-shaft-seal-1-shaft\"\u003ePSS 02100112 — 1\" Shaft\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pss-02114214-pss-shaft-seal-1-1-4-shaft\"\u003ePSS 02114214 — 1-1\/4\" Shaft\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pss-02138214-pss-shaft-seal-1-3-8-shaft\"\u003ePSS 02138214 — 1-3\/8\" Shaft\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe most common ordering mistake with PSS seals is matching only the propeller shaft diameter. For the 02-212-312, the second critical measurement is the \u003cstrong\u003estern tube OD\u003c\/strong\u003e — this version fits a 3-1\/2\" to 3-5\/8\" tube. Measure both before ordering to avoid a difficult installation mismatch. If you're replacing an existing stuffing box, also confirm you have enough shaft space for the 9.625\" installed length before the coupler or cutlass bearing.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250770214948,"sku":"752-02212312","price":1600.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/2baaee38-2b25-4010-bf10-9b4ce8134d70.png?v=1786645907","url":"https:\/\/marisolmarine.com\/products\/pss-shaft-seal-2-1-2-shaft-3-1-2-stern-tube-02212312","provider":"Marisol Marine Company","version":"1.0","type":"link"}