Valve Packings

While some packings can be used in both pumps and valves, many are not interchangable. The more suited to the application, the longer it will last!

Valve Packings

Pack it so it lasts

The most common reason a valve leaks is due to using a poor quality packing. Many original equipment manufacturers supply the least expensive, general service packing for their valves. Many users make the mistake of replacing that poor quality packing with an identical poor-quality packing. Stop the vicious cycle of repair, allow us to help you get a packing that will last far longer, and seal tighter.  We can help you conform to the latest API and AQMD minimal leakage requirements using the best available technology. We may even save you money.

Flexible Graphite Packing

Flexible Graphite is the base material in the most effective sealing products. Because flexible graphite is very malleable, it will conform to irregularities that cause leak paths. Sealing them tight.

We offer multiple styles that are primarily made up of flexible graphite. Some have another yarn such as carbon yarn for pressure resistance and to act a a wiper to keep contaminants from getting into the graphite.

Graphite packings specifically designed for valve service will have Inconel wire. Some styles have minimal wire while others will have each yarn wrapped with an Inconel wire mesh.

To meet stringent API fugitive emissions requirements, we offer multiple brands.

mechanical seals

Graphite Valve Stem Packings and Packing Sets

seal repairs

Anti-extrusion

Carbon end rings coated with PTFE or graphite prive to be superior end rings or “Bull Rings”.

Pressure resistant

Inconel wire is added in mutiple styles, as the percentage of wire increases so does the pressure resistance.

Want a valve packing that will last?

Our Ameri-lon packing is a proprietary blend of graphite and PTFE. Compatible with most Chemicals resistant to abrasives.

Style 627 Jacketed Valve stem Packing

  • Temperature: To 1200°F – Steam (650°C)
  • pH-1-12
  • Pressure: To 1000 PSI
  • Construction: Braid over a core with Inconel reinforcement
  • Designed for Valves
  • Seals at lower Torques
  • Equal to Garlock ® 127-AFP.
  • In Stock!

$79.00 / lb.

627 is a high-temperature carbon yarn with Inconel wire braided over a resilient core thoroughly impregnated with graphite and corrosion inhibitor.

Style 690 Ameri-lon Pump /Valve Packing

  • Compatible with chemicals
  • Naturally Lubricious
  • pH-0-14
  • 300 PSI in a Pump
  • 4000 PSI in a Valve
  • Shaft Speed to 4500 FPM
  • Temp Range -328 to 536 F
  • In Stock!

$50.00 / lb.

Style 620 PTFE Packing

  • Chemically compatible
  • Naturally Lubricious
  • Available in “Soft” and FDA grades usseal
  • Temp Rating to 500 F
  • Speed to 1000 FPM
  • Pressure to 300 PSI Pumps
  • Pressure to 2000 PSI Valves
  • Interloock Braid

Style 645 PTFE/ Acrylic Packing with Kevlar Corners

  • Abrasive resistant
  • Anti-extrusion design
  • Prevents Roll
  • Excellent as End rings
  • Rated to 500 F
  • Speed to 200 FPM
  • Pressure to 300 PSI
  • Interlock braid

Style 630 Kevlar (Aramid) Packing

  • Aramid fiber packing
  • Extremely durable
  • Excellent in reciprocating pumps
  • Temp Rating to 500 F
  • Speed to 2500 FPM
  • Pressure 500 PSI
  • Interlock Braid
  • inert lubricant used

Style 696 Flexible Graphite Packing

  • Expanded Graphite
  • Self Lubricating
  • Minimizes water loss
  • Can be run dry
  • High Temp 850 F
  • Steam service to 1200 F
  • Speed to 4000 FPM
  • Interlock Braid

Braided from a combination of expanded flexible graphite (696) and high strength carbon fibers (698). Carbon fibers are braided into the corners to provide anti-extrusion and better abrasion resistance in tough applications. This compression packing can give virtually leak free performance. 696CC was independently fire tested to API 589 at API 607 temperatures and pressures.

Style 696CC Flexible Graphite Packing

  • Expanded Graphite with Carbon Corners.
  • Self Lubricating
  • Minimizes water loss
  • Can be run dry
  • Resists extrusion – Eliminates the need for end rings
  • High Temp 850 F
  • Steam service to 1200 F
  • Speed to 4000 FPM
  • Pressure: 2500 PSI (200 bar)

Style 699 Flexible Graphite Packing

  • Expanded Graphite with strands of Inconel wire
  • Increased pressure resistance
  • Conforms to irregular surfaces
  • High Temp 850 F +
  • Steam service to 1200 F
  • Static Sealing
  • Interlock Braid

Braided from a combination of expanded flexible graphite and inconel wire. 699 retains dimensional stability in high temperature, high pressure environments, and can meet most VOC emission control regulations. 699 packing was independantly fire tested to API 589 at API 607 temperatures and pressures.

Style 677 Flexible Graphite with Inconel jacketed wire Packing

  • Flexible graphite, jacketed with Inconel® wire
  • Self Lubricating
  • For use in Valves
  • Passed API 589/607 Fire Test
  • High Temp 850 F
  • Steam service to 1200 F
  • Inconel
  • Interlock Braid

Style 649 Carbon Packing

  • Chemically compatible
  • Naturally Lubricious
  • Pan Based Carbon
  • Temp Rating to 650 F
  • Speed to 2500 FPM
  • Pressure to 400 PSI Pumps
  • Pressure to 2000 PSI Valves
  • Interlock Braid

Style 649 carbon yarn braided packing heavily impregnated with PTFE dispersion. For severe services in pumps or valves handling chemicals, solvents and acids. An ideal packing for paper mill applications.

698 Carbon Packing

  • Chemically compatible
  • Naturally Lubricious
  • Pitch Based Carbon
  • Temp Rating to 850 F
  • Speed to 4000 FPM
  • Pressure to 500 PSI Pumps
  • Pressure to 2500 PSI Valves
  • Interlock Braid

Specialty Packings for problem applications

Not all applications are created equal. The most common cause of packing failure are:

  1. Compatibility Issues
  2. Temperature limitations
  3. Abrasive media

 With 30 years of experience, we can recommend solutions to your packing problems.

mechanical seals

Valve Packing Sets

Flexible Graphite Combination Valve Packing Set

Short Stack Graphite Valve Packing Set

mechanical seals

Standard Graphite/Packing Valve Packing Set

A wide range of packings. Like our mechanical seal offerings, we are not restricted to one brand USA made or import. We offer your favorites and have various styles of private branded packing for us.  We have delivered Garlock, John Crane, and Chesterton to our customers, that had engineering callouts to meet.

mechanical seals

There is no sealing device more expensive than a cheap one.

We are unique.  Most distributors are tied to one major line and promote only that line.  We offer multiple lines because no one sealing company is good at, or most cost effective in all the product segments they offer. Let us help you get the most for your money.

Combination Sets

Seals Specialists

AS&P provides combination sets of packing.  Examples of this would be our 698 or 649 Carbon end rings combined with die-formed flexible graphite rings in cup and cone, square or rectangular shapes.  These sets are common in OEM valve sets designed for high temperature and low emission applications.  Rockwell Valve did extensive testing on these flexible graphite sets and concluded they could last the life of the valve.

E-mail your inquiry

Compression Packing

Are valve and pump packings interchangeable?

Some packing styles can be used in both valves and pumps, but never assume this is always the case or you may wind up with scored pump shafts.  Generally, all pump packings can be used in a valve, depending on the service. The opposite is not true.  Because valves often function at higher pressures, they may have wire reinforcement to help prevent extrusion of the packing. If a packing containing wire is placed against a pump shaft, you can expect it to score the shafts causing wear and creating a leak path, not to mention an added expense to replace the pump shaft sleeve.

Get In Touch

(888) 654-SEAL

Location

1537 E. McFadden Ave-A
Santa Ana, CA. 92705

Email

sales@usseal.com

Open Hours

Mon: 7:30am - 5pm
Tue: 7:30am - 5pm
Wed: 7:30am - 5pm
Thur: 7:30am - 5pm
Fri: 7:30am - 5pm
Sat: Closed
Sun: Closed

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