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Shop Self Seal Envelopes

(1041 items found)
Reduce or eliminate unnecessary supplies with self-seal envelopes. Skip the need for sponges, moistener pens, and refillable bottles. Self-stick envelopes use wax or glue to bond both sides, and secure contents. Save time without losing durability or security with different styles of self-stick envelopes, and order #10 self-seal envelopes at 500 per box for long-lasting supplies. Read more
All filters 1041 items found
54% off
New Customers
Quill Brand EasyClose Security Tinted #10 Business Envelopes, 4 1/8 x 9 1/2, White, 500/Box (30164Quill Brand EasyClose Security Tinted #10 Business Envelopes, 4 1/8 x 9 1/2, White, 500/Box (30164
Quill Brand® 500/Box EasyClose Security Tinted #10 Business Envelope, 4-1/8" x 9-1/2", White (3016453)
Item #: 032-60353
US #10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
These envelopes measure 4 1/8"H x 9 1/2"L in size, providing enough space for your mail
$37.99 Save 54%
$17.49
Per box
($0.03/Envelope)
Staples QuickStrip EasyClose Self Seal #10 Business Envelopes, 4 1/8 x 9 1/2, White, 100/Box (ST50
Staples QuickStrip EasyClose Self Seal #10 Business Envelopes, 4 1/8" x 9 1/2", White, 100/Box (ST50307-CC)
Item #: 901-394053
Business envelope for a professional look
White, 24lb. woven paper for durability
#10 (4-1/8" x 9-1/2")
55% off
New Customers
Quill Brand Easy Close Self Seal Security Tinted #10 Business Envelope, 4-1/8 x 9-1/2, White, 100/Quill Brand Easy Close Self Seal Security Tinted #10 Business Envelope, 4-1/8 x 9-1/2, White, 100/
Quill Brand® 100/Box Easy Close Self Seal Security Tinted #10 Business Envelope, 4-1/8" x 9-1/2", White (69703 / 70711)
Item #: 032-75762
US # 10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 4-1/8" x 9-1/2"
$11.19 Save 55%
$5.09
Per box
($0.05/Envelope)
Quality Park Self Seal Security Tinted #8 5/8 Double Window Envelope 3 5/8 x 8 5/8, White, 500/BoxQuality Park Self Seal Security Tinted #8 5/8 Double Window Envelope 3 5/8 x 8 5/8, White, 500/Box
Quality Park Self Seal Security Tinted #8 5/8 Double Window Envelope 3 5/8" x 8 5/8", White, 500/Box (QUA24539)
Item #: 901-24539
#8 5/8 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
These envelopes measure 3 5/8"H x 8 5/8"L in size, providing enough space for your mail.
Quill Brand Self Seal Security Tinted #10 Left Window Envelope, 4 1/8 x 9 1/2, White Wove, 500/BoxQuill Brand Self Seal Security Tinted #10 Left Window Envelope, 4 1/8 x 9 1/2, White Wove, 500/Box
Quill Brand® 500/Box Self Seal Security Tinted #10 Left Window Envelope, 4-1/8" x 9-1/2", White Wove (3016452)
Item #: 901-60350Q
Envelopes are suitable for all your mailing needs
Made from 24 lbs. white wove paper for durability
These envelopes measure 4 1/8" x 9 1/2" in size, providing enough space for your mail
Quill Brand Easy Close Self Seal #10 Business Envelope, 4-1/8 x 9-1/2, White, 500/Box (69686 / 707Quill Brand Easy Close Self Seal #10 Business Envelope, 4-1/8 x 9-1/2, White, 500/Box (69686 / 707
Quill Brand® 500/Box Easy Close Self Seal #10 Business Envelope, 4-1/8" x 9-1/2", White (69686 / 70701)
Item #: 901-75746Q
US # 10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 4-1/8" x 9-1/2"
Staples Self Seal Self Seal Security Tinted #10 Business Envelopes, 4 1/8 x 9 1/2, White, 500/BoxStaples Self Seal Self Seal Security Tinted #10 Business Envelopes, 4 1/8 x 9 1/2, White, 500/Box
Staples Self Seal Self Seal Security Tinted #10 Business Envelopes, 4 1/8" x 9 1/2", White, 500/Box (ST511289-CC)
Item #: 901-511289
US #10 business envelopes are suitable for all your mailing needs
Made from white 24 lb. paper for durability
These envelopes measure 4 1/8"H x 9 1/2"L in size, providing enough space for your mail
$41.99
1-3 box
($0.08/Envelope)
Save 5%
$39.99
4+ box
($0.08/Envelope)
Staples QuickStrip EasyClose Self Seal Catalog Envelopes, 9 x 12, White, 100/Box (ST379479-CC)Staples QuickStrip EasyClose Self Seal Catalog Envelopes, 9 x 12, White, 100/Box (ST379479-CC)
Staples QuickStrip EasyClose Self Seal Catalog Envelopes, 9" x 12", White, 100/Box (ST379479-CC)
Item #: 901-379479STP
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
White paper shows labeling and writing clear and concise
Dimensions: 9"L x 12"H
New Customers
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Custom #10 Self Seal Envelopes with Security Tint, 4 1/4 x 9 1/2, 24# White Wove, 1 Standard Ink,
Custom #10 Self Seal Envelopes with Security Tint, 4 1/8" x 9 1/2", 24# White Wove, 1 Standard Ink, 250 / Pack
Item #: 901-QCENV00057
4-1/8" x 9-1/2" (#10 Envelopes), Self Seal with Security Tint
24# White Wove Stock with Security Tint, Flat Ink
250 Envelopes Per Pack
$71.99
1 pack
($0.29/EACH)
Save 60%
$28.99
20+ pack
($0.12/EACH)
Staples QuickStrip EasyClose Self Seal Security Tinted #6 3/4 Business Envelopes, 3 5/8 x 6 1/2, WStaples QuickStrip EasyClose Self Seal Security Tinted #6 3/4 Business Envelopes, 3 5/8 x 6 1/2, W
Staples QuickStrip EasyClose Self Seal Security Tinted #6 3/4 Business Envelopes, 3 5/8" x 6 1/2", White, 50/Box (ST862999-CC)
Item #: 901-862999STP
QuickStrip business envelopes are suitable for many mailing projects
Made from white 20 lb. paper for durability
These envelopes measure 3 5/8"H x 6 1/2"W in size, providing enough space for your mail
Custom #10 Self Seal Window Envelopes w/Security Tint, 4 1/8 x 9 1/2, 24# White Wove, 1 Standard I
Custom #10 Self Seal Window Envelopes w/Security Tint, 4 1/8" x 9 1/2", 24# White Wove, 1 Standard Ink, 250/Pack, 250 / Pack
Item #: 901-QCENV00069
4-1/8" x 9-1/2" (#10 Envelopes), Self Seal with Security Tint
24# White Wove Stock with Security Tint, Flat Ink
Window is 4-1/2” x 1-1/8”, 7/8” from left and 1/2” from bottom
$77.99
1 pack
($0.31/EACH)
Save 63%
$28.99
20+ pack
($0.12/EACH)
58% off
Clearance
Quill Brand® Self-Seal Catalog Envelope, 6 x 9, Brown Kraft, 500/Box (SS6928)
Quill Brand® 500/Box Self-Seal Catalog Envelope, 6" x 9", Brown Kraft (SS6928)
Item #: 901-SS6928
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
28-lb. plain brown Kraft paper
Size: 6" x 9"
$125.99 Save 58%
$53.28
Per box
($0.11/Envelope)
Staples QuickStrip EasyClose Kraft Self Seal #1 Catalog Envelopes, 6 x 9, Kraft, 100/Box (ST20140/Staples QuickStrip EasyClose Kraft Self Seal #1 Catalog Envelopes, 6 x 9, Kraft, 100/Box (ST20140/
Staples QuickStrip EasyClose Kraft Self Seal #1 Catalog Envelopes, 6" x 9", Kraft, 100/Box (ST20140/20140)
Item #: 901-892100
Brown Kraft paper provides sturdy construction
6" x 9"
QuickStrip closure makes sealing envelopes easy
Quill Brand® Easy Close Catalog Envelope, 9 x 12, White, 250/Box (PS91228W)Quill Brand® Easy Close Catalog Envelope, 9 x 12, White, 250/Box (PS91228W)
Quill Brand® 250/Box Easy Close Catalog Envelope, 9" x 12", White (PS91228W)
Item #: 901-PS91228W
Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes
28-lb plain white wove stock
Size: 9" x 12"
$59.29
1-3 box
($0.24/Envelope)
Save 6%
$55.99
4+ box
($0.22/Envelope)
Quality Park Self Seal Security Tinted #8 Double Window Envelopes, 3-5/8 x 8-5/8, White Wove, 500/Quality Park Self Seal Security Tinted #8 Double Window Envelopes, 3-5/8 x 8-5/8, White Wove, 500/
Quality Park Self Seal Security Tinted #8 Double Window Envelopes, 3-5/8" x 8-5/8", White Wove, 500/Box (QUA67539)
Item #: 901-QUA67539
Check business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
These envelopes measure 3 5/8"H x 8 5/8"L in size, providing enough space for your mail
$63.99
1-4 box
($0.13/Envelope)
Save 11%
$56.99
10+ box
($0.11/Envelope)
Quill Brand Easy Close Self Seal #10 Window Envelope, 4-1/8 x 9-1/2, White, 500/Box (69684 / 70697Quill Brand Easy Close Self Seal #10 Window Envelope, 4-1/8 x 9-1/2, White, 500/Box (69684 / 70697
Quill Brand® 500/Box Easy Close Self Seal #10 Window Envelope, 4-1/8" x 9-1/2", White (69684 / 70697)
Item #: 901-75761Q
US # 10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 4-1/8" x 9-1/2"
ComplyRight 2025 1099-MISC Tax Form Self-seal envelopes, 3-Part, 2-Up, Copy A, B, C/2, 1096 Transmit
ComplyRight 2025 1099-MISC Tax Form Self-seal envelopes, 3-Part, 2-Up, Copy A, B, C/2, 1096 Transmittal, 25/Pack (6102E25)
Item #: 901-24578220
1099-MISC tax form is designed to report payments made in the course of your business for each person to whom you paid at least 10 dollars in royalties or at least 600 dollars in rents
Consists of three parts
Tax form page format: 2-Up
$26.49
Per each
ComplyRight 2025 1099-NEC Tax Form 50 self-seal envelopes, 4-Part, 3-Up, Copy A, B, C/2, 1096 Transm
ComplyRight 2025 1099-NEC Tax Form 50 self-seal envelopes, 4-Part, 3-Up, Copy A, B, C/2, 1096 Transmittal, 50/Pack (NEC6103E)
Item #: 901-24578200
1099-NEC (nonemployee compensation) is an IRS form created for companies to report payments made to an individual who performed services in the course of business as a nonemployee
Includes four-part tax forms
3-Up forms: three forms on a single sheet
$51.99
Per each
Medical Arts Press Self Seal Security Tinted #4 Double Window Envelope, White, 500/Box (32373)
Medical Arts Press Self Seal Security Tinted #4 Double Window Envelope, White, 500/Box (32373)
Item #: 901-32373
Self-seal envelope with with clear filmview windows
Patient's name and address show through bottom window, your return address shows through top
Made from white 24 lb. white wove peek-proof stock for privacy
$79.99
Per box
($0.16/Envelope)
Price drop
Quality Park Redi-Seal Self Seal Security Tinted #10 Double Window Envelope, 4 1/2 x 9 1/2, WhiteQuality Park Redi-Seal Self Seal Security Tinted #10 Double Window Envelope, 4 1/2 x 9 1/2, White
Quality Park Redi-Seal Self Seal Security Tinted #10 Double Window Envelope, 4 1/2" x 9 1/2", White Wove, 50/Pack (24559-QP-50)
Item #: 901-23996473
#10 Double window business envelope
Dimensions: 4.125"L x 9.5"W
Comes in White Wove 24lbs. w/ Self-Seal
$42.99
Per pack
($0.86/Envelope)
ComplyRight Self Seal Security Tinted Double-Window Tax Envelopes, White, 50/Pack (3333250)ComplyRight Self Seal Security Tinted Double-Window Tax Envelopes, White, 50/Pack (3333250)
ComplyRight Self Seal Security Tinted Double-Window Tax Envelopes, White, 50/Pack (3333250)
Item #: 901-24507957
Double-window envelope for W-2 (5210/5211) tax form.
Self-sealing for added convenience.
Pack of 50 envelopes.
$50.99
Per each
Double Window Self-Seal Envelopes for Middle Laser Checks, 250/Pack
Double Window Self-Seal Envelopes for Middle Laser Checks, 250/Pack
Item #: 901-55440
Lower window is 9/16" up from the bottom and 5/8" and measures 4"W x 1"H.
Upper window is 2-1/4" up from the bottom and 3/8" from the left and measures 3-3/4"W x 1"H.
Overall size: 8-3/4"W x 3-5/8"H.
$124.19
Per pack
($0.50/Envelope)
ComplyRight Self Seal Security Tinted Double-Window Tax Envelopes, 3 7/8 x 8 3/8, 50/Pack (DW19WS5ComplyRight Self Seal Security Tinted Double-Window Tax Envelopes, 3 7/8 x 8 3/8, 50/Pack (DW19WS5
ComplyRight Self Seal Security Tinted Double-Window Tax Envelopes, 3 7/8" x 8 3/8", 50/Pack (DW19WS50)
Item #: 901-24507904
Double-window envelope for 3-Up 1099 tax form.
Self-sealing for added convenience.
Pack of 50 envelopes.
$39.29
Per each
Out of stock
Adams Self Seal Security Tinted Double Window Envelope, 3.75 x 8.5, White, 100/Pack (S1099-3PS)
Adams Self Seal Security Tinted Double Window Envelope, 3.75" x 8.5", White, 100/Pack (S1099-3PS)
Item #: 901-24496514
Simple, high-quality envelope for 1099-NEC tax forms
Dimensions: 3.75" x 8.5"
Made of white paper
$105.99
1-8 pack
($1.06/EACH)
Save 19%
$85.99
9+ pack
($0.86/EACH)
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Displaying 1-24 of 1041

Self-seal envelopes work

These envelopes use an adhesive gum or wax on both flaps that seal the sides together when firmly gripped. They save a step because users don’t have to remove a protective strip from the glue or apply water to activate a sticky adhesive. There are three main types of envelope flaps: wallet, square, and pointed. Most businesses use the wallet type for billing and other reports, and use the square for larger mailings, such as catalogs and oversized brochures. Pointed styles are formal and more common for invitations and similar special mailers. Envelopes come in a variety of sizes that are designated by numbers. For example, #10 self-seal envelopes (500 per box) are ideal for mailing letter-size documentation, while #9 envelopes are suitable as return envelopes as they fit inside #10s. 

Self-stick envelopes with address windows

Some types of self-stick envelopes have one or two windows to display printed mailing and return addresses, which also helps customers identify the sender. The display windows make it easier to use computer printouts of invoices and other digital correspondence, and they reduce the need for mailing labels. Increase productivity by reducing the number of mailing steps. Window locations include:

  • Double-left
  • Single-left
  • Single-right
  • Center

You can also increase office production by using self-seal padded mailers in place of wrapping products and placing them in shipping envelopes.

Different self-stick envelopes for various tasks

Self-seal envelopes are available in multiple sizes to mail different documents, including oversized items such as catalogs and legal papers. Use mailers that are larger than the documents to reduce bending and tearing. Send delicate items in self-seal poly bubble mailers that use shipping bubble wrap lining on the inside of the envelope. These help keep contents safer than traditional envelopes.

For personal and confidential correspondence, consider envelopes with a security tint. These have a blue pattern that reduces the content’s visibility through the envelope. Offices can also increase document security by using a windowless style. For the most professional appearance, keep blank printer-compatible labels with office mailing supplies. You can write on or use printed labels with these options.

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