Washers

VARIOUS WASHERS

Application:Oil & Gas:Automotive;Aerospace;Chemical Processing;Semiconductor;IBC lids,Drum Plugs,Drum Flanges,Etc

Washers also named Gaskets .Qiming Packaging Rubber Washers And Seals Washers With Good-sealing ,Acid-proof,Alkali-proof,Oil-proof,Heat-resistant,.Gaskets For 2 ” Flanges & Plugs , 3/4″ Flanges &Plugs .

Material: PE, EDPM( FDA Compliant),BUNA. Black & White Available. Please Click Steel Drum Plugs,Drum Flanges,Plastic Plugs,Nylon Plugs To See Their Applications.

GASKETS RING WASHERS RING DRAWING

Qiming Gasket Ring Washer Technical Data
Item	Inner Dia	Rectangular Ring		O Ring
	d	δ	b	d1
G2 Gasket	50.5±0.5	2.6±0.2	2.7±0.2	3.0±0.2
G3/4 Gasket	20.0±0.5	2.6±0.2	2.7±0.2	3.0±0.2
G2 Gasket	60.5±0.5	2.7±0.2	3.2±0.2	3.3±0.2
G3/4 Gasket	27.5±0.5	2.7±0.2	2.4±0.2	3.3±0.2
All the unit in millimetre (mm)-Free Samples available for quality checking

White PE Washers –Qiming Packaging

White PE Washers From Qiming Packaging Specification

Application
Poly Ethylene（PE）Gaskets

for 2 inch and 3/4 inch steel drum closures and plastic drum plugs
Size
2 inch and 3/4 inch or so
Feature
Good-sealing ,Acid-proof,Alkali-proof,Oil-proof, limited Heat-resistant.
Shape
O ring with round or square crosss section
Material
New Poly Ethylene（PE）
Color
Translucent white
Package
Plastic bag/carton box
Delivery
5 days as usual or as per your quantity.

Black BUNA Washers Specification

Size
2 inch and 3/4 inch or so
Application
BUNA Gaskets for 2’’&3/4’’ drum plugs and drum flanges
Feature
Eexcellent sealing properties ,Acid-proof,Alkali-proof,Oil-proof,Heat-resistant.
Shape
ring gasket
Material
BUNA

(a synthetic rubber formed by polymerizing butadiene

or by copolymerizing it with such compounds as acrylonitrile or styrene )
Color
Black
Package
Plastic bag/carton box
Delivery
5 days as usual or as per your quantity.

Black BUNA Washers -Qiming Packaging

gaskets-for-drum-caps drum-bungsdrum-flanges-Qiming-Packaging

White,Light Yellow,Black EPDM Washers -Qiming Packaging

White,Light Yellow,Black EPDM Washers Specification

Size
2 inch and 3/4 inch or so
Application
EPDM Gaskets for 2 inch & 3/4 inch steel /plastic drum plugs (bungs)and steel flanges
Feature
Good-sealing ,Acid-proof,Alkali-proof,Oil-proof,Heat-resistant.EDPM is FDA compliant.
Shape
ring gasket with square or round cross section.
Material
EPDM(Ethylene-Propylene-Diene Monomer)
Color
white,light yellow,black.
Package
Plastic bag/carton box
Delivery
5 days as usual or as per your quantity.

Wahser Gaskets FKM VITON Fluororubber Washers

PTFE Gaskets vs. FFKM Gaskets: Key Differences

1. Material Basics

Property	PTFE (Polytetrafluoroethylene)	FFKM (Perfluoroelastomer)
Polymer Type	Semi-crystalline thermoplastic	Fully fluorinated elastomer
Common Brand Names	Teflon™, Dyneon™	Kalrez™, Chemraz™

2. Temperature Resistance

PTFE:
- Continuous: -200°C to +260°C
- Short-term: Up to 300°C (with decomposition risk)
FFKM:
- Continuous: -20°C to +327°C
- Short-term: Up to 343°C (depending on grade)

3. Chemical Resistance

Chemical Class	PTFE Performance	FFKM Performance
Strong Acids	Excellent	Excellent
Strong Bases	Excellent	Excellent
Polar Solvents	Good	Excellent
Hydrocarbons	Excellent	Excellent
Plasma	Poor	Excellent

4. Mechanical Properties

Characteristic	PTFE	FFKM
Hardness (Shore)	50-65D	65-90A
Tensile Strength	10-30 MPa	7-20 MPa
Compression Set	Poor (cold flows)	Excellent (<20% at 204°C)
Elongation at Break	200-400%	100-300%

5. Sealing Performance

PTFE:
- Static seals only
- Requires high bolt loads
- Prone to creep relaxation
FFKM:
- Suitable for dynamic sealing
- Maintains seal under vibration
- Better recovery after compression

6. Typical Applications

PTFE Preferred When:
- Ultra-high purity required (semiconductors)
- Lowest friction needed
- Extreme cryogenic temperatures
FFKM Preferred When:
- Extreme temperature cycling
- Aggressive chemical mixtures
- Dynamic sealing applications

7. Cost Comparison

PTFE: $10-$50/kg (standard grades)
FFKM: $2,000-$5,000/kg (specialty grades)

8. Physical Differences

PTFE:
- White opaque material
- Stiff, boardy feel
- Can be skived into thin films
FFKM:
- Typically black or brown
- Rubber-like elasticity
- Molded or extruded forms only

Gaskets FKM VITON Fluororubber Washers

FKM VITON Gaskets

FFKM high-temperature resistant sealing ring

Perfluoroether O-ring

EPDM customized size washers/gaskets for steel drums

Premium Drum Gasket – Customizable for 55-Gallon Drums

Key Specifications

✅ Cross Section:

Standard: 0.375″ (W) × 0.094″ (H)
Customizable: Larger sizes & alternative shapes (e.g.round, square) available

✅ Compatibility:

Perfect fit for 55-gallon drums
Custom designs for non-standard drum sizes (e.g., 30-gallon, 85-gallon)

✅ Configuration Options:

Standard: Tube (hollow) or Solid core
Custom: Multi-layered, foam-filled, or hybrid designs

✅ Length:

Standard: 71.5 inches (pre-cut for easy installation)
Custom lengths: No minimum order quantity (MOQ) for specialty requests

✅ Material Selection:

Standard Options:
- Natural Rubber | EPDM (weather-resistant) | Nitrile (oil-resistant)
- Neoprene (chemical-resistant) | Silica Gel (food-grade) | TPE (flexible)
Specialty Materials:
- FKM (high-temp) | PTFE (chemical-inert) | Custom compounds

✅ Density Customization:

Adjustable from soft (20 Shore A) to firm (90 Shore D) for:
- Vibration damping | Pressure sealing | Impact resistance

Why Choose Our Drum Gasket?

✔ Leak-Proof Design: Precision-engineered for chemicals, oils & hazardous liquids
✔ Temperature Range: -60°F to +450°F (material-dependent)
✔ Certifications: FDA, NSF, ISO 9001 (available on request)
✔ Fast Turnaround: Samples in 5 days, bulk orders in 2 weeks

Ideal Applications

Chemical storage drums | Food-grade containers | Petroleum transport
Pharmaceutical packaging | Industrial waste storage

VARIOUS WASHERS