Thetford Standard 5 door rubber seal

Hi there   - we had a problem with the Thetford Standard 5 exterior lockable door (the one which gives outside access to under the bed). We had lined the bottom of this under-bed storage area with carpet - for warmth and also to help deaden the sound of chairs/tables rattling whilst traveling. After a winter of discontent and horrendous rain we noticed when we opened the cupboard the rubber seal was wet and of course the carpet inside was consequently damp/wet. Hmmmm - still not to panic, a quick surf around Google/eBay located a replacement rubber seal which was easy to fit. We also got a can of Thetford Seal lubricant Spray and gave the new seal a liberal dose of said spray - also did the Toilet Cassette Door whilst we were at it - and job's a good 'un!