Specifications
Specifications
Complete specifications for PTFE solid plugs. Items marked Customizable available upon request.
Request custom specs
| Joint Size (#) | Top Diameter (mm) | Bottom Diameter (mm) | Height (mm) | Typical Vessel |
|---|
| 10 | 10 | 8 | 28 | Micro tubes, small vessels |
| 12 | 12 | 10 | 30 | Micro tubes, small vessels |
| 14 | 14 | 11 | 35 | Small flasks, tubes |
| 19 | 19 | 16 | 38 | Small flasks |
| 24 | 24 | 21 | 42 | Standard flasks (most common) |
| 29 | 29 | 26 | 45 | Standard flasks |
Custom joint sizes available upon request.
📌 Customization Options:
• Material Upgrade: PFA (translucent, visible contents, lower metal leaching)
• Custom Joint Sizes: Non-standard sizes available (e.g., 34#, 40#)
• Custom specifications available upon request — consult our technical team
Product Description
I. Overview
The PTFE solid plug is precision-machined from high-purity PTFE resin
for sealing and capping standard joint glassware. The solid plug is
made entirely of PTFE with no metal components — ensuring zero metal
ion contamination when in contact with corrosive media.
The plug features a 1:10 taper that precisely matches standard joint
specifications, providing a tight, reliable seal when inserted.
Unlike stirring plugs, solid plugs have no center hole — making them
ideal for full sealing or temporary capping of vessels.
Available in 10#, 12#, 14#, 19#, 24#, and 29# standard joint sizes —
compatible with all standard joint tubes, flasks, and reaction vessels.
Widely used in chemical synthesis, sample storage, and pharmaceutical R&D.
II. Core Performance Parameters
- Purity: High-purity PTFE with ultra-low metal leaching (Pb, U < 0.01ppb)
- Operating Temperature: -196℃ ~ 260℃
- Chemical Resistance: Resistant to HF, aqua regia, concentrated H₂SO₄, HNO₃, strong alkalis, organic solvents
- Surface: Non-stick, easy to clean
- Joint Sizes: 10# / 12# / 14# / 19# / 24# / 29#
- Taper: 1:10 (standard joint)
III. Material & Workmanship
Manufactured from imported high-purity PTFE resin using precision
machining in cleanroom environments — ensuring dimensional accuracy,
smooth surfaces, and burr-free finish. The taper is precision-ground
for a tight, leak-free fit with standard joints.
Each product undergoes rigorous visual and dimensional inspection
to ensure precision and surface quality.
