Gravel Lane, Quarry Lane Industrial Estate, Chichester, West Sussex, PO19 8PQ. Tel: 01243 787817 Fax: 01243 530440. Email: sales@oringslimited.co.uk. Website: www.oringslimited.co.uk. PARTNER/DISTRIBUTER for TRELLEBORG SEALING SOLUTIONS. Part of the Oldham Seals Group of companies. How to Measure an O-ring. O-rings are round mechanical seals that keep gas or liquid from passing through an opening. Over time, these seals may wear out and require replacement.
1 CostHelper readers report paying $115-$260 to have their air conditioning checked and either topped off or recharged, at an average cost of $162.  If leaks are detected, it typically costs $150-$800 for minor repairs to a vehicle's air conditioning system and then recharging it. This generally includes replacing a few parts like hoses, sensors, or either the compressor or condenser.
Typical costs: Class A motorhomes are the largest and most expensive category of motorized RV. Premium costs depend on the motorhome's age, size and value, and frequency of use. RVersOnline.org estimates average insurance costs of $1,000-$1,300 a year for a gas-powered Class A motorhome used 140 days each year.