DUCO® best sellers

#1 PLUMBING HVAC BOILER DUCO® PLUMBING HVAC BOILER SIGHT GLASS RUBBER WASHERS GASKETS *HIGH QUALITY* (20-PK)

$19.75 on Ebay

#2 1" SPRING LOADED INDUSTRIAL DUCO® 1" SPRING LOADED INDUSTRIAL LIFT CHECK VALVE (BRONZE 200 WSP), ASME, #50T

$79 on Ebay

#3 🔥 [2 SETS] 5/8" OD Boiler DUCO® [2-SETS] 5/8" OD Boiler Sight Glass Repair Kit (Brass Washers, Nuts & Gaskets)

$16.95 on Ebay

#4 🔥 7 3/8" Sight Glass 5/8" DUCO® 7-3/8" Sight Glass 5/8" OD x 7-3/8" for WEIL McLAIN EGH, EG, 68, LGB Boilers

$14.75 on Ebay

#5 (2 PK) 'GRAPHITE' SIGHT DUCO® (2-PK) 'GRAPHITE' SIGHT GLASS GASKET FOR FULTON BOILER, #2-12-256, #2-12-000256

$19.75 on Ebay

#6 🆕 TEF LON GAGE GAUGE BOILER DUCO® TEF-LON GAGE GAUGE BOILER SIGHT-GLASS PTFE GASKET WASHERS SET - WILL NEVER LEAK

$16 on Ebay

#7 🔥 (6 PK) VITON Gaskets DUCO® (6-PK) VITON Gaskets for Boiler Sight Gauge Glass, 5/8" ID, Steamer up to 428 ºF

$29.75 on Ebay

#8 1/2" NPT BRONZE WATER DUCO® 1/2" NPT BRONZE WATER GAUGE VALVE SET w/BALL CHECK FOR 5/8" OD SIGHT GLASS

$84.75 on Ebay

#9 WEIL McLAIN Gauge Glass DUCO® WEIL-McLAIN Gauge Glass Kit 5/8" x 8-5/8" w/ 2 Washers & 2 Gaskets #591-419-194

$33.50 on Ebay

#10 3/4" BRONZE BALL VALVE DUCO® 3/4" BRONZE BALL VALVE *200 WSP* FOR HIGH PRESSURE STEAM SERVICE, #80

$32 on Ebay

#11 1" BRONZE BALL VALVE DUCO® 1" BRONZE BALL VALVE *200 WSP* FOR HIGH PRESSURE STEAM SERVICE, #80

$44 on Ebay

#12 STEEL SIPHON (PIGTAIL) DUCO® STEEL SIPHON (PIGTAIL) STRAIGHT, 1/4" NPT, 300 WSP, FOR STEAM SERVICE GAUGE

$17.95 on Ebay

#13 🆕 Replacement Gasket for DUCO® Replacement Gasket for REMA Return Tanks , 9-1/2" OD, 6-1/2" ID, 6.5 mm Thick

$19.50 on Ebay

#14 [4 PK] DISC HOLDER for DUCO® [4-PK] DISC HOLDER for BUCK & HEAD VALVES w/ New Pin, #HF70-17, #25649-1, #V115

$39.50 on Ebay

#15 GROEN Part# Z008742 DUCO® GROEN Part# Z008742, Red & White Stripe Line Sight Glass, 5/8" OD x 4-3/4" L

$22.50 on Ebay

#16 1/2" BRONZE WHISTLE VALVE DUCO® 1/2" BRONZE WHISTLE VALVE (200 WSP), FOR STEAM, OIL & WATER SERVICE, #25WT-1/2

$93 on Ebay

#17 10" L x 5/8" OD Red Line DUCO® 10" L x 5/8" OD Red Line Boiler Sight Gauge Glass F/ High-Pressure Steam Service

$24.50 on Ebay

#18 6" High Pressure Borosilicate DUCO® 6" High-Pressure Borosilicate Sight Gauge Glass Tubing 5/8"OD & 2.6mm Wall Thick

$17.50 on Ebay

#19 24" Solid Brass Float DUCO® 24" Solid Brass Float Rod (3/8"-16 Thread) w/ 2 Stainless Steel Lock Nuts

$45 on Ebay

#20 Gauge Glass Kit 5/8 OD DUCO® Gauge Glass Kit 5/8 OD x 6" For REIMERS Boilers w/ Gaskets & Washers Part# 02420

$29.50 on Ebay