Instead of having an O shape it now has an X shape. This means that when pressed between the chain plates, it no longer has a flattened O ring shape but instead has two smaller faces touching either plate in an X shape. This gives you the same great sealing and durability but now with very low friction.
Graduation Announcement Etiquette: How to Address Graduation Announcements. College Graduation Announcement Etiquette: How To Address Graduation Announcements With Inner Envelopes. You can either address your envelopes by hand or order printed envelopes while purchasing your college graduation announcements. The later will save you time and effort.
Save-the-date announcements, invitations and the guestbook are often all printed with a common theme or look. Save-the-date announcements may be sent out online via social networking or email. Graduation announcements should include the time, date, and location of the graduation ceremony. Save-the-date announcements have a pleasant tone to encourage guests to reply. Save-the-date announcements are often used to notify friends and family of an upcoming wedding.