Get current pricing for Oem, OEM-36885-ID Used 40 Square Foot Stainless Steel Heat Exchanger. Buxton Mfg Model 54-4-6-7-b-sp. 6 Diameter X 86 Long. Shell Rated 100 Psi @ 400°f. Tubes Rat . Product Category: Process Equipment, Sub Category: Process Heat Exchangers: