Self-Sealing Fasteners, Nuts and Washers

APM's patented, pre-assembled self-sealing screws and fasteners provide both fastening and sealing integrity in a single unit. Unique design features a resilient silicone O-ring held captive in a precision asymmetrical groove under the head. Vibration-resistant and reusable screws, bolts and nuts withstand internal and external pressures/vacuum to 20,000+ psi. When vibration is an issue, APM offers a full line of pre-applied self-locking techniques (pellets, strips, patches). SEELOC® Washers are self-sealing, vibration-resistant washers, each having a silicone rubber section, molded and bonded to a stainless steel formed washer ideal for large or slotted holes.

SEELSCREW® Self-Sealing Screws
SEELBOLT® Self-Sealing Bolts
SEELNUT® Self-Sealing Locking Nuts
SEELRIVET® Self-Sealing Rivets
SEELOC® Self-Sealing Washers

Including Military Standard MS3212, 3213 Patent No. 3,175,454

Features and Benefits:

• Positive sealing under vacuum or pressure
• Install like a conventional fastener
• Reusable & compatible with all surface finishes
• Metal-to-metal contact assures fastening integrity
• Optional O-ring seal materials - silicone rubber, BUNA-N,
  *Viton®, others (see Materials & Characteristics Chart)
• Uniform, high-strength design
• Meets Military MIL-S-82496A spec for integral O-ring self-sealing machine screws
• UL Recognized
• UL Tested
• Optional threadlocking add-ons
• Optional tamper-resistent heads
• No chemicals to apply, no worker respiratory or environmental disposal issues

Typical Applications:

• Instrumentation /Electronics-Electrical panels
• Fuel tanks
• Pressure sensors, gauges, meters
• Gear/transmission boxes
• Valves
• Motor housings
• Portable instruments
• Military equipment (MS3212, 3213) - underwater, weapons
• Food processing systems
• Medical equipment
• Marine panels & hulls
• Off-road vehicles & equipment
• Recreational vehicles & equipment
• Hydraulic fluid systems - gear boxes, pumps, transmissions, cylinders, values, compressors
• Environmental monitoring & controls, HAZMAT equipment
• Electronic controls
• Consumer appliances, tools
• Computer components
• Motors
• Cabinets, enclosures
• Any application where both fastening and sealing are required

*Viton® is a registered trademark of DuPont Performance Elastomers.

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http://www.apmhexseal.com/Self-Sealing_Fasteners.aspx