Selected page of Self-Sealing Fasteners
CATALOG SF300A
SELF-SEALING
FASTENERS
SELF-
SEALING
WASHERS
WHEN JUST FASTENING ISNT ENOUGH
Recognized
| When just fastening
isnt enough.
APM Hexseal invented and patented pre-assembled
self-sealing fasteners designed to provide both fastening
and sealing integrity in a single unit. Their design features
a resilient O-ring held captive in a precision engineered
groove under the fastener head. This combination of
precise groove geometry and O-ring characteristics
results in an absolute seal regardless of surface finish,
while still providing full metal-to-metal contact.
Vibration-resistant and re-usable, SEELSKREWS ,
SEELBOLTS , and SEELNUTS can withstand
internal/external pressures up to 6,000 psi/vacuum at
temperatures from -160 F to +500 F.
Made in the U.S.A., APM Hexseal self-sealing
fasteners are available in standard and metric thread
sizes. And the integral seal can be formulated for compatibility with a wide range of gases and liquids.
They represent a superior sealing alternative to
sealing compounds, tape, chemical coatings, and
deformable washers that attempt
| SEELSKREW High-pressure, self-sealing screws
Recom. Clear. Hole
THREAD SIZE
LENGTHS*
C MAX.
D MAX.
MIN.
MAX.
2-56UNC-2A
1/4" to 5/8" incl.
.168"
.055"
.091"
.095"
3-56UNF-2A
1/4" to 5/8" incl.
.194"
.063"
.109"
.113"
3-48UNC-2A
1/4" to 5/8" incl.
.194"
.063"
.109"
.113"
4-40UNC-2A
1/4" to 1" incl.
.220"
.069"
.125"
.129"
5-40UNC-2A
1/4" to 1" incl.
.245"
.075"
.140"
.144"
6-32UNC-2A
1/4" to 1" incl.
.271"
.083"
.147"
.152"
8-32UNC-2A
1/4" to 1" incl.
.323"
.097"
.173"
.179"
10-32UNF-2A
1/4" to 1" incl.
.374"
.113"
.199"
.204"
10-24UNC-2A
1/4" to 1" incl.
.374"
.113"
.199"
.204"
1/4-20UNC-2A
5/16" to 1 1/4" incl.
.493"
.148"
.265"
.269"
STANDARD PAN HEAD (available from stock)
TYPE S SLOTTED
LENGTHS
Recom. Clear. Hole
THREAD SIZE
in increments of 1/8"
C MAX.
D MAX.
MIN.
MAX.
4-40UNC-2A
1/4" to 1" incl.
.245"
.075"
.144"
.148"
6-32UNC-2A
1/4" to 1" incl.
.296"
.089"
.171"
.175"
8-32UNC-2A
1/4" to
| SEELBOLTS High-pressure, self-sealing bolts
SEELBOLTS are designed to seal out air, water, lubricants and other liquids or gaseous contaminants. SEELBOLTS are available in
many standard thread sizes and with optional sealing materials. They can also be supplied with either NYLOK self-locking Aero-Patch
or Aero-Pellet , a black oxide, painted heads, or in a captivated (KAPTO-SKREW configuration.
LENGTHS
THREAD
P
H
Flats
Clear. Hole
Up to 1" 0 1/32
SIZE
NOM.
MAX.
MAX.
Min.
Max.
1" to 2" 0 1/16
1/4-28UNF-2A
.510"
.163"
.440"
.265"
.269"
3/8", 1/2", 5/8", 3/4"
1/4-20UNC-2A
.510"
.163"
.440"
.265"
.269"
3/8", 1/2", 5/8", 3/4"
5/16-24UNF-2A
.580"
.211"
.502"
.332"
.336"
1/2", 5/8", 3/4", 7/8"
5/16-18UNC-2A
.580"
.211"
.502"
.332"
.336"
3/8", 1/2", 5/8", 3/4", 7/8"
3/8-24UNF-2A
.650"
.243"
.565"
.395"
.399"
5/8", 3/4", 7/8", 1"
3/8-16UNC-2A
.650"
.243"
.565"
.395"
.399"
1/2", 5/8", 3/4", 7/8", 1"
1/2-20UNF-2A
.870"
.323"
.752"
| SEELNUTS High-pressure, self-sealing locking nuts
SEELNUTS are designed for use on all types of adjusting screws, threaded studs, and machine bolts in applications where leakage may
occur due to extreme pressures. Installed like an ordinary nut, SEELNUTS form a high-pressure seal along the thread section and contact
surface when torqued. Their single-piece design eliminates the need for gaskets, sealing compounds and surface preparations. Fullyadjustable and reusable, they resist vibration, provide metal-to-metal contact, and seal under vacuum or high pressure. Available in all
standard thread sizes, the integral seal can be formulated for compatibility with most gases or liquids.
(OTHER SEALING MATERIALS
AVAILABLE. SEE TABLE I, PAGE 4.)
THREAD
SIZE
F
H
T
6-32
5/16
9/64
1/64
8-32
11/32
5/32
1/64
10-32
3/8
5/32
1/64
10-24
3/8
5/32
1/64
1/4-20
7/16
7/32
1/64
1/4-28
7/16
7/32
1/64
5/16-18
1/2
17/64
1/64
5/16-24
1/2
17/64
| SEELOC Vibration-resistant, self-sealing washers
SEELOC Washers are self-sealing, vibration-resistant washers, each having a silicone rubber section, molded and bonded to a stainless steel formed
washer. These washers are designed for use with regular screws or bolts for sealing panels and cases having large clearance holes or slots, and can
also be used to seal openings of protrusions as shown below. Upon tightening, a seal is formed under the head of the screw or bolt as well as around
the periphery of the washer face.
Printed in USA
APM
SEELSKREWS , SEELBOLTS , SEELRIVETS , KAPTO-SKREWS
are U.S. Registered Trademarks of APM HEXSEAL CORPORATION.
6
44 Honeck Street Englewood NJ 07631 Tel.: (201) 569-5700 Fax: (201) 569-4106
www.apmhexseal.com
WHEN JUST FASTENING ISNT ENOUGH
For
Washer
Max. Hole
Tightening
PART NO. Thread Size
O.D.
Size (inch/mm)
Torque (lb-in)
75601
#6
1/2"
1/4 6.35
9-11
75801
#8
1/2"
1/4 6.35
16-22
75101
#10
1/2"
1/4 6.35
20-3
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