Product review (5 stars): Frigidaire 5303279394 Tub Seal Kit for Washer- perfect fit, but...read the review!
See my reviews also for FRIGIDAIRE 131545101 TRUNNION, Frigidaire 3204405 Outer Tub Bearing and Frigidaire 134418700 Hub to gain a little more insight as to what you're up against if you are replacing the transmission unit in the washer. If the washer shaft and associated parts are badly corroded (think of the environment they're in!) you may need to replace more than just a leaking tub seal! But as far as the seal goes, it was a perfect fit. and did the job. Excellent quality, form, fit and function. I replaced the transmission unit so I had to also replace a number of other things (read my other reviews as stated above). The price was excellent here at Amazon, about $16 with Prime shipping, way cheaper than the washer parts websites.