Adjustable Nipple 18ga

18 gauge QF Adjustable Nipple should be specified for length adjustments when using 18 gauge pipe. Includes black nitrile O-ring for sealing (red silicone available for high temperature applications). Only made in galvanized steel.
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Quick Fit (QF) Adjustable Nipples 18 gauge are used to provide variable length adjustments in straight lines of heavier gauge QF pipe. Specify this version for length adjustments in 18 gauge pipe. This version comes with a black nitrile O-ring for seal. However, you can specify a red silicone O-ring for higher temperature applications.

QF Adjustable Nipples 18 gauge are manufactured as follows:

  • In Galvanized metal only
  • With rolled QF End diameters from 4 to 24 inches
  • Construction: Longitudinal seam is laser welded.
Size
in.
Weight
lbs.
Length (L)
in.
OD
in.
ID
in.
Rolled Edge
nom. in.
4 1.68 11.375 3.93 3.83 0.02
5 2.08 11.375 4.94 4.84 0.02
6 2.56 11.375 5.96 5.86 0.02
7 3.84 11.125 6.96 6.86 0.3
8 4.32 11.125 7.95 7.85 0.3
9 4.88 11.125 8.95 8.85 0.3
10 5.44 11.125 9.95 9.85 0.3
11 6.08 11.125 10.94 10.84 0.3
12 6.72 10.875 12.04 11.94 0.4
13 6.25 10.875 13.05 12.95 0.4
14 7.78 10.875 14.04 13.94 0.4
15 8.31 10.875 15.04 14.94 0.4
16 8.84 10.875 16.04 15.94 0.4
17 9.38 10.875 17.05 16.95 0.4
18 9.91 10.875 18.04 17.94 0.4
20 10.77 10.875 20.04 19.94 0.4
22 11.70 10.875 22.05 21.95 0.4
24 12.90 10.875 24.02 23.92 0.4
Galvanized Gauge Metal Thickness
Gauge Inches Millimeters
18 0.0516 1.31
NOTES:
  1. At temperatures ranging between 390° F and 480° F, the zinc-iron alloy layers in the galvanized steel will continue to provide a high level of protection from corrosion. However, there may be some peeling, changes in mechanical properties, and reduction in the corrosion protection. Recommended maximum service temperature is 390° F.
  2. For 304 SS metal, bluing may occur at temperatures of 800° F and above.
Item Material Compliance/Rating
QF 18 Gauge Adjustable Nipple Galvanized ASTM A653 with a G-90 Rating
3M Scotch Seal Metal Sealant 2084 Polyurethane ASTM E162
ASTM E662
Bombardier SP 800-C
Rock River Silicone Sealant 100% Silicone ASTM C920 Class 25
TT-S-00230C Class A and TT-S-001543A
FDA No. 421 CFR 117.2600, conforms to FDA requirements
Red Devil HVAC/R High Temperature Silicone Sealant Silicone ASTM C920 Class 25
TT-S-00230C Class A and TT-S-001543A
CEBTP 432.6 140-2
Mil Spec 46106A
CGSB 19C9-9B
DIN 18540 Part 2
Orex 150031-2
O-ring, black Buna-N 60 Duro-Meter hardness
O-ring, red Silicone rubber ZZ-R-765 Class 2A
2B grade 70 AMS-3304E
3304F and 3303G
FDA approved
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